T-50

T-50 oli neuvostoliittolainen toisen maailmansodan aikainen kevyt panssarivaunu. Joitain edistyksellisiä piirteitä omannut vaunu oli kallis valmistaa ja teknisesti epäluotettava. Niitä rakennettiin vain 69 kappaletta.

Vuonna 1939 Neuvostoliiton panssarijoukot alkoivat uudistua Espanjan sisällissodan kokemuksien perusteella. Alettiin suunnitella uutta vaunua, joka korvaisi T-26:n. Vaunusta oli tarkoitus tulla puna-armeijan tavallisin panssarivaunutyyppi. Piirustukset olivat valmiita tammikuussa 1941, mutta tuotanto ei voinut alkaa teknisten ongelmien vuoksi.

                                 Kaapattu T-50 (R-110) Äänislinna tammikuu 1944
        Vaunussa on kolmivärinen naamio maalaus ja suomen lippu tornin huipulla.                                                         

Samaan aikaan suunniteltiin Harkovan veturitehtaalla toista uutta panssarivaunua, jonka piti korvata BT-sarjan.
Vaunu, joka sai nimen T-34, oli hyvin panssaroitu, tehokas ja hyvin liikkuva.

Saksan hyökättyä Neuvostoliittoon vuonna 1941 suurin osa raskaasta sotateollisuudesta evakuoitiin Ural-vuorille, missä tuotanto alkoi. Vaunu oli hyvä, mutta kärsi vieläkin teknisistä ongelmista ja maksoi melkein yhtä paljon kun raskaampi ja parempi T-34, ja sen korvasi kevyenä panssarivaununa T-60 ja T-70 sekä muita kevyitä panssarivaunuja, jota Neuvostoliitto vastaanotti Lend-lease-avun kautta.

                                          Kaapattu T-50, kevät 1942 Äänislinna.

Vain 69 vaunua valmistettiin (joista vain 48 sai pääaseen) ennen kun tuotanto päättyi tammikuussa 1942. 

Harvat tuotetut vaunut käytettiin Leningradin rintamalla. Niiden taistelukelpoisuudesta tiedetään hyvin vähän, mutta niiden sanotaan pärjänneen vuonna 1941 kaikille saksalaisvaunuille hyvin. 

Suomalaiset saivat sotasaaliiksi yhden vaunun, joka on nykyisin esillä Parolan panssarimuseossa.

Vaunu oli monilta osin hyvä: vaunussa oli hitsattu, viistetty panssari, kolmen miehen torni, johtajalle kupoli (mikä tuli muihin neuvostovaunuihin vasta 1942), ja kaikissa vaunuissa oli radio. Vaunu, kuten neuvostovaunut yleensäkin, oli kuitenkin ahdas ja V-4-moottori teknisesti epäluotettava. Luotettavuusongelmien ja korkean hinnan takia tuotanto lopetettiin.

                             

                                                         T-50 in Parola panssarimuseo
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T-50 light infantry tank
Type	Light infantry tank
Place of origin	Soviet Union
Service history
In service	1941-1945
Used by	Soviet Union  Finland
Wars	World War II
Production history
Designer	S. Ginzburg, L. Troyanov, OKMO
Designed	1939–41
Manufacturer	Factory 174, Omsk
Produced	1941–42
Number built	69
Specifications
Weight	14 tonnes (14 long tons; 15 short tons)
Length	5.20 m (17 ft 1 in)
Width	2.47 m (8 ft 1 in)
Height	2.16 m (7 ft 1 in)
Crew	4
Armor	12–37 mm (0.47–1.46 in)
Main armament	45 mm Model 1938 gun (150 rds.)
Secondary armament	7.62 mm DT machine gun
Engine	model V-4 diesel inline-six engine 300 hp (220 kW)
Power/weight	21 hp/tonne (16 kW/tonne)
Suspension	torsion bar
Fuel capacity	350 l (77 imp gal; 92 US gal)
Operational range	220 km (140 mi)
Speed	60 km/h (37 mph)

 T-50  Ps183-1 at the SteknV depot in Jyväskylä in autum 1945

Cocardes hawe replaced the swastikas.

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The T-50 was a light tank developed on the eve of World War II for the Red Army. The experience of the Spanish Civil War led to an effort to upgrade or replace the large Soviet tank fleet. Prior to 1939, most tanks in Red Army service were improved versions of foreign designs. For example, the most numerous tank, the T-26 light infantry tank, was a copy of the British Vickers 6-Ton tank with a Soviet-designed turret and 45 mm gun. However, just prior to and during the war, the USSR developed new light, medium and heavy tanks of wholly indigenous design. The T-50 light tank was intended to replace the T-26 infantry tank; in prewar planning, the T-50 was intended to become the most numerous Soviet tank, operating alongside the BT fast tank.

Development of the T-50 started as the SP project (Soprovzhdeniya Pekhoty, 'Infantry Support') in 1939 at the OKMO design bureau in the S.M. Kirov Factory Number 185 in Leningrad, under the direction of, and headed by, L. Troyanov and I. Bushnevov, to create a light tank replacement for the T-26 and BT tanks. Initial prototypes, called T-126 and T-127, were not much improved over the T-46-5 project which had been abandoned earlier that year, but the heavier T-126 was selected for further development. 

                                               T-50 Parola Tank museo

The design bureau was gutted during the Great Purge, and was unable to continue the project, so it was transferred to the K.E. Voroshilov Factory Number 174 in Leningrad, May 1940, where two prototypes from the Voroshilovsky and Kirovsky factories were tested. The first 2 vehicles were finished at Factory No. 174 in Leningrad in late 1940. Troyanov completed the T-50 design in January 1941. After a few modifications it was ready for delivery in April 1941. Production was then authorized, but due to technical problems, it was unable to proceed.

                                          Captured T-50 in Äänislinna 1942 
              The tank has winter camouflage, and the name Niki on the turret.

In the meantime, a replacement for the  BT fast tanks was developed and built at the Malyshev Factory (KhPZ) in Ukraine, which exceeded its original programme. The result was the very capable and economical T-34 medium tank.

After the German invasion, Operation Barbarossa in June, tank factories were ordered to be transferred to the Urals. Part of OKMO was moved to Omsk after September, and production was finally begun. The T-50 was of an excellent design, but still suffered from technical problems, and at that time was found to be as expensive to produce as the more capable T-34. 

                                                   T-50 Parola Tank museo

Much simpler T-60 light tanks were already being mass-produced. A total of 69 T-50 tanks were built (only 48 of them armed), before production ended in January 1942.

Some further infantry tank design work on a prototype, called the T-45, continued at Factory Number 174 and the Kirovskiy Factory Number 100. But faced with the need to accelerate T-34 production, and due to a lack of interest from troops in the field, the Soviet infantry tank concept was abandoned.

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Mustavalkoiset T-50 kuvat ovat kirjasta Suomen Panssarivaunut. 1918 - 1997  Esa Muikku / Jukka Purhonen / kustannus Oy Apali
The Finnish Armoured Vechiles by Apali.

Hannutin taistelu - Battle of Hannut

Hannutin taistelu oli Saksan ja länsiliittoutuneiden joukkojen välillä 12.–14. toukokuuta 1940 Hannutin ja Gemblouxin alueella Belgiassa toisessa maailmansodassa käyty taisteltu, joka oli siihen mennessä suurin panssaritaistelu.

Saksan tavoitteena oli sitoa taisteluun Ranskan 1. armeija ja siten estää sen osallistuminen Saksan armeijaryhmä A:n Ardenneilla tehtävän hyökkäyksen torjuntaan. Läpimurto Ardenneilla oli tarkoitus toteuttaa 15. toukokuuta eli vain viisi päivää Alankomaihin ja Belgiaan suunnattujen hyökkäysten jälkeen. Ero antoi liittoutuneille kuvan, että saksalaiset aikoivat hyökätä Ranskaan samoin kuin ensimmäisen maailmansodan Schlieffenin suunnitelman mukaisesti. 

                    

Liittoutuneiden joukkojen siirtyessä Belgiaan ne sidottiin taisteluihin hyökkäämällä Hannutissa ja Gemblouxissa. Ranskan 1. armeijan sivusta jäätyä avoimeksi saksalaiset etenivät Englannin kanaalin rantaan piirittäen liittoutuneiden alueella olleet joukot.

Taistelu päättyi Saksan taktiseen voittoon, joskin Ranskan 1. armeija kykeni liittymään Gemblouxin puolustajiin. Gemblouxissa käytiin seuraava taistelu 14.–15. toukokuuta, missä kärsimänsä tappion jälkeen ranskalaisjoukot vetäytyivät Lilleen. Ranskalaiset kykenivät edelleen viivyttämään saksalaisten etenemistä antaen brittiläiselle siirtoarmeijalle aikaa vetäytyä Dunkerqueen evakuoitavaksi Englantiin.

Hannutin aluetta puolusti kenraali Prioux’n Ranskan armeijan ratsuväkiarmeijakuntaan kuuluneet 2. ja 3. kevyt mekanisoitu divisioona (ransk. Division Légére Mécanique, DLM). Kumpaankin divisioonaan kuului kaksi rykmenttinen panssariprikaati, ja rykmenteissä oli 87 panssarivaunua, joista puolet keveitä Hotchkiss H35/H39 -vaunuja ja loput keskiraskaista Somua S35 -vaunuja. Divisioonaan kuului lisäksi motorisoitu kivääriprikaati, tiedustelurykmentti, kenttätykistörykmentti, pioneeripataljoona sekä normaalit huoltoyksiköt. 
Divisioonan tehtäväksi oli suunniteltu strateginen tiedustelu- ja suojaustehtävät.

Kenraali Hoepnerin Saksan XVI motorisoitu armeijakunta, jonka muodostivat 3. ja 4. panssaridivisioona, joihin kumpaankin kuului panssari- ja jalkaväkiprikaati tukevine osineen kuten kenttätykistö-, pioneeri- ja viestiyksiköt. Kumpikin prikaati koostui kahdesta rykmentistä. 

Panssariprikaatiin kuului kaikkiaan 561 panssarivaunua, mutta liikekannallepanon aikaisten kalustopuutteiden vuoksi todellinen vahvuus oli noin 300.

Battle of Hannut
Part of the Battle of Belgium in World War II
Two destroyed SOMUA S35s being inspected by German soldiers.
Date 12—14 May 1940 Location Hannut, Belgium Result Tactical French victory Strategic and operational German victory
Belligerents
France  Belgium  Netherlands	Germany
Commanders and leaders
René Prioux  Gabriel Bougrain  Jean-Léon-Albert Langlois	Erich Hoepner  Horst Stumpff  Johann Joachim Stever
Strength
2 Armoured Divisions 20,800 personnel 600 AFVs	2 Panzer Divisions 25,927 personnel 618 tanks (some sources say 674) 108 artillery pieces 1,252 aircraft
Casualties and losses
121 tanks destroyed/damaged or abandoned personnel: unknown	60 killed 80 wounded 49 tanks destroyed 111 Tanks damaged

   
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The Battle of Hannut (not to be confused with the Battle of Gembloux Gap) was a Second World War battle fought during the Battle of Belgium which took place between 12 and 14 May 1940 at Hannut, Belgium. It was the largest ever tank battle at the time.


The primary purpose of the Germans was to tie down the strongest elements of the 1st French Army and remove it from the German's Army Group A main thrust through the Ardennes, as laid out in the German operational plan Fall Gelb, or "Case Yellow", by General Erich von Manstein. The German breakout of the Ardennes was scheduled for 15 May, five days after the German attacks on the Netherlands and Belgium. The delay was to entice the Allies into believing the main thrust would, like the Schlieffen Plan in World War I, come through Belgium and then down into France. 

When the Allied armies advanced into Belgium, they would be tied down by German offensive operations in eastern Belgium at Hannut and Gembloux. With the 1st French Army flank exposed, the German could thrust to the English Channel which would encircle and destroy the Allied forces. For the French Army, the plan in Belgium was to prepare for a prolonged defence at Gembloux, some 21 miles to the west of Hannut. The French sent two armoured divisions to Hannut, to delay the German advance and give strong French forces time to prepare a defence at Gembloux. Regardless of what happened at Hannut, the French planned to fall back on Gembloux.

The Allied supreme commander General Maurice Gamelin committed his First Army Group, under General Gaston Billotte, and its strongest Army, the French 1st Army under General Georges Blanchard with the fully mechanised Corps de Cavalerie (Cavalry Corps), commanded by General René-Jacques-Adolphe Prioux, to advance into Belgium to support the large but more lightly equipped Belgian Army. 

Gamelin expected the German attack to break the Belgian defences at the Albert Canal line rapidly—the Belgians had in any case indicated they would after four days withdraw to the planned allied front in central Belgium, the "Dyle Line" between Antwerp and Namur—and sought to quickly establish an entrenched front line centred on Gembloux, just north of Namur, to check what Gamelin foresaw as the main enemy effort (Schwerpunkt) of the campaign: an attempt to break through the "Gembloux Gap" between the rivers Dyle and Meuse with a concentration of armoured forces. 

As Belgium, the Netherlands, and Luxembourg would remain neutral until the German invasion of those countries (Fall Gelb), it had proven impossible to adequately prepare positions for the French 1st Army. Therefore the Cavalry Corps was given the mission to execute a delaying battle, somewhere between Gembloux and Maastricht (the likely crossing-point, where the Albert Canal connected to it, over the eastern bend of the Meuse), to prevent the enemy from reaching the Gembloux area until the eighth day of an invasion and to allow the 1st Army sufficient time to dig in.

The Cavalry Corps had been created on 26 December 1939, containing both then existing armoured divisions of the Cavalry, the 1re Division Légère Mécanique ("1st Mechanised Light Division") and the 2e DLM. On 26 March 1940 however, 1st DLM was given the mission, in case of an invasion, to establish a connection with the Dutch Army near Breda; this experienced active division was therefore removed from the Cavalry Corps. 


It was replaced by the 3e DLM, recently constituted on 1 February, manned with reservists and still insufficiently trained. Nevertheless, Prioux still considered his forces sufficient to either contest a river-crossing at Maastricht, or wage a manoeuvre battle or, as a third alternative, defend an improvised line. He was at liberty to choose any option, provided the enemy was kept from Gembloux long enough. He decided to keep all possibilities open and act as the situation would demand.
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The German plan for this sector called for an assault by airborne and shock troops to take Fort Eben-Emael and the Meuse and Albert Canal bridges, thus opening a way through the Dutch and Belgian defences for the 4. Panzerdivision (4th Panzer Division), and bring the Albert Canal defensive line to a premature collapse. Once this breach was made, General Erich Hoepner's XVI Army Corps, and Army Group B would assume control of the 4th Panzer Division, the 3rd Panzer Division and the 20th Motorised Infantry Divisions. 


Hoepner's mission was to quickly launch his Corps from the bridgehead, seize the area around Gembloux before the French infantry divisions could entrench themselves there, and by thus conforming to the worst fears of the French High Command draw all modern Allied forces and their reserves to the north, away from the main thrust through the Ardennes. This would enable the Wehrmacht to cut the French First Army, the BEF and the Belgians off by a swift advance to the English Channel leading to a giant encirclement. The action was basically a feint to tie down the Allies in the north so they could not interfere with the main thrust through the Ardennes.
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The Battle of Hannut became the largest tank battle of the campaign. The French DLMs had two Brigades Légères Mécaniques each, one of these, the "combat" brigade, contained two tank regiments, each regiment having a medium tank squadron equipped with the SOMUA S35, and a light tank squadron fielding the Hotchkiss H35. Its organic strength was 44 S35s and 43 H35s; also eight armoured command vehicles were present.

The other brigade contained a reconnaissance regiment, equipped with 44 Panhard 178 armoured cars organised in two squadrons, and a mechanised infantry regiment equipped with 126 Laffly S20TL personnel carriers. 

Three organic AMR (Automitrailleuse de Reconnaissance) squadrons of 22 tanks each were also included as were three armoured command vehicles. The 2e DLM used AMR 35 tanks for this rôle, but as the production of this light tank had been discontinued, 3e DLM employed H35s instead.

It outmatched the Panzer I to IIIs in terms of armour and firepower.
Each DLM thus had an organic strength of 240 tanks and 44 Panhards, for a total of 176 SOMUA S35s, 238 Hotchkiss H35s, 66 AMR 35s and 88 P 178s, including the organic matériel reserve.

The 3e DLM used modifié 39 versions, a swifter, improved version of the H35s, that today is often referred to as the "H 39", but also had a single AMR squadron of 22 vehicles of the slower original batch of four hundred, that were exclusively present in 2e DLM. Most Hotchkiss tanks of both versions were fitted with the short, 37 mm 21 caliber SA 18 gun, which proved a poor antitank weapon. Some platoon and squadron commander's vehicles had been fitted with the more powerful 37 mm 35 caliber SA 38 gun, totalling about a fifth of the total number of Hotchkiss tanks.


The organisation of 2e DLM was: 3e BLM as a combat brigade, with 13e Dragons and 29e Dragons tank regiments; the second brigade was 4e BLM with 8e Cuirassiers reconnaissance regiment and 1er Dragons mechanised infantry regiment. The 3e DLM had 5e BLM with 1er Cuirassiers and 2e Cuirassiers tank regiments and 6e BLM with 12e Cuirassiers reconnaissance regiment and 11e Dragons mechanised infantry regiment.
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Like their French counterparts the German armoured divisions each had an armoured brigade (Panzer-Brigade) with two tank regiments (Panzer-Regimenter). The latter were divided into two tank battalions (Panzer-Abteilungen); each tank battalion had, apart from a staff company, two light companies of nineteen battle tanks, in theory mainly equipped with the Panzerkampfwagen III, and a medium company of fifteen battle tanks using the Panzerkampfwagen IV. Due to a shortage of these types, the positions were actually in majority filled with the light Panzerkampfwagen II and even Panzerkampfwagen I. 

The exact numbers of each type on 10 May available to the German armoured divisions are known: 3rd Pz. Div. had 314 battle tanks in its 3. Panzer-Brigade consisting of 5. and 6. Panzer-Regiment: 117 PzKpfw Is, 129 PzKpfw IIs, 42 PzKpfw IIIs and 26 PzKpfw IVs; 4th Pz. Div. had 304 battle tanks in its 5. Panzer-Brigade consisting of 35. and 36. Panzerregiment: 135 PzKpfw Is, 105 PzKpfw IIs, 40 PzKpfw IIIs and 24 PzKpfw IVs. XVI. 

Armeekorps thus had a total of 618 tanks: 252 PzKpfw Is, 234 PzKpfw IIs, 82 PzKpfw IIIs and 50 PzKpfw IVs. Besides these battle tanks, 3rd Pz. Div. had 27 Befehlspanzer tracked command vehicles with only machine-gun armament and 4th Pz. Div. ten. Each division also had about 56 armoured cars. Most PzKpfw IIs of XVI Armeekorps had not yet been uparmoured to the new 30 mm standard and were thus vulnerable to even the French 37 mm L/21 gun.

As the French mechanised infantry regiments had three mechanised infantry battalions, total infantry strength of the Corps de Cavalerie (CC) was six battalions. XVI. Armeekorps had seven motorised infantry battalions. The French units were only lightly equipped with antitank-guns: twelve 25 mm and eight 47 mm SA 37 guns per division; and anti-aircraft guns: six 25 mm guns per division. Also, there was an imbalance in artillery: the French Mechanised Light Divisions each had 36 pieces against 68 (including 24 7.5 cm leichtes Infanteriegeschütz 18) per Panzerdivision. This was not set off by Corps artillery; the Germans had four attached artillery regiments and a heavy battery; the French CC only two 75 mm field gun regiments (and a group of twelve 25 mm antitank-guns) as corps troops.


The specialized VIII. Fliegerkorps of the Luftwaffe, with some 300 Junkers 87 dive bombers and 42 Henschel Hs 123 biplanes, plus some 130 Messerschmitt 109 fighter aircraft, stood ready to support the Panzers. The IV. Fliegerkorps and IX. Fliegerkorps added some 280 medium bombers and over 500 Messerschmitt 109 and Messerschmitt Bf 110 heavy fighters, some of which would also be at Hoepner's disposal.
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Billotte suggested to Prioux that he might force his armour further east to support the Belgian Army. But Prioux, unimpressed by the Belgian defence and fearing to concentrate his force in the open beneath a dominant Luftwaffe, preferred to deploy his dragoons and supporting arms further back in a line of strong points, with his tanks behind them to counterattack enemy penetrations. Billotte accepted his decision and, impressed by the need for haste, added that the First Army Group would advance by day as well as by night, despite the threat of the Luftwaffe, in order to reach Gembloux. Thus Prioux need stall the Panzers only until the dawn of 14 May.

At 11:00 A.M. on 11 May, Billotte diverted most of the French 23rd Fighter Group (Fighter Groupement 23) to cover the advance of the First Army and its neighbouring units. After more fighters had been removed for bomber escort missions, few fighters were left to cover the cavalry. The Allied bombers concentrated on retarding the dangerous advance of Hoepner's Panzers. Prioux's ground reconnaissances fell back before the Panzers, toward the main body of French cavalry, which was established in strongpoints along a 40 km front with the 2d DLM from Huy on the Meuse and north, then westward along the Mehaigne creek. 

The 3d DLM formed a front from the area of Crehen to Orp and then northward along the Petite Gette stream to the area of Tirlemont. The battleground which Prioux chose consisted of a plateau with occasional woods, a dense road network, extended localities and a few isolated large farms. The Mehaigne and Petite Gette were small streams flowing within two-to-three-meter-deep rock cuts with many crossing points, often fordable by tracked vehicles, and offering good cover for would-be infiltrators. But the key terrain feature was the ridge running from Hannut through Crehen and Merdorp. North of the ridge, the Petite Gette flowed north into the Escaut River, south of it, the Mehaigne flowed south into the Meuse. This ridge formed a natural corridor for mechanized forces.

By placing the 3e DLM on a 17 km front, only 11 km were partially covered by anti-tank obstacles. Prioux was straining the limits of French doctrine. The French cavalry manual of 1939 (General Langlois was one its authors and was now commanding the 3e DLM) had considered the case of a DLM assigned to mask a breach in the front until reinforcements could arrive. In such a case, the manual ruled, command would be decentralised. The division should place a combined-arms force on each flank of possible penetration. 


Then the commander would move his artillery and his reserves to maintain a continuous line of fire. But, if the enemy attacked in force along the whole front, this defence transforms itself into a manoeuvre of retreat. The manual added that a DLM could retreat on a front of no more than 10 to 15 km in average terrain. In the event of the front's extension, the absence of anti-tank obstacles, and a formidable enemy, a withdrawal should be made. French doctrine warned that on a wide front on open terrain against massed armour, the DLM was to abandon the decentralised defence and to concentrate its forces for action. Prioux did not follow these directions.
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The French command articulated its cavalry front on May 11. On the left, the 3e DLM under General Langlois, its front divided into northern and southern sectors. 

The northern sector, commanded by Colonel Dodart des Loges, had, from north to south, the 12th Cuirassiers (division reconnaissance regiment), in touch with British and Belgian cavalry in the Tirlemont area, then a line of two battalions of the 11th Dragoon Regiment; the 3rd Battalion holding six kilometers along the Petite Gette around Opheylissem, with 21 Hotchkiss tanks plus another such squadron from the 1st Cuirassiers battalion and supported by 21 75 mm guns from the Cavalry Corps reserve; and the 2nd Battalion holding five kilometers along the Petite Gette southward to Orp, similarly with its own Hotchkisses plus another squadron from the 1st Cuirassiers and supported by 12 75mm artillery from the 76th artillery. 

Behind this sector stood one squadron of SOMUA tanks of the 1st Cuirassiers at Marilles.General de Lafont commanded the five kilometer southern sector of the division astride the dangerously open terrain facing Hannut. Lafont had the 1st Battalion of the 11th Dragoons in strongpoints at Thisnes, Wansin, and Crehen, with their Hotchkiss squadrons plus an additional Hotchkiss squadron each in Crehen and Thisnes from the 2nd Cuirassiers, supported by 21 75 mm artillery guns and 12 105 mm guns from the 76th Artillery. 


One SOMUA squadron of the 1st Cuirassiers at Jauche and two such squadrons from the 2d Cuirassiers at Jandrenouille and Merdorp formed the sector reserve. South of Crehen the 2nd DLM was positioned, covered along almost the whole of its front by the Mehaigne creek, down to Huy on the Meuse river.
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On 12 May 4. Panzerdivision raced to seize their first objective, Hannut, reaching the area that morning. General Hoepner ordered the 3rd and 4th Panzer Divisions (3rd Pz. Div. and 4th Pz. Div.) to concentrate on and secure Hannut to secure the 6th Army's flank. Noting his lack of fuel and his divisions artillery and infantry support that had not yet caught up with the armour, which made an immediate assault on Hannut risky, Major-General Stever of the 4th Pz. Div. requested an air-drop of fuel. Concluding that he was only facing one French battalion, he engaged the French defences. That morning the 4th Pz. Div. made contact with a French Armoured force of some 25 tanks. The 4th Pz. Div. destroyed seven of the French tanks for no losses.

Allied air units also concentrated on his unit, which could have made Stever's mission more difficult. The RAF sent over 38 bombers, losing 22. The Arme de l'air sent two expeditions, one including 18 of its Breguet 693 bombers on their maiden mission, losing eight. The 85 Messerschmitt 109s of Jagdgeschwader 27 (Fighter Wing 27) flew 340 sorties that day, claiming 26 Allied aircraft for the loss of four fighters. German anti-aircraft artillery (AAA) claimed another 25. But that afternoon General Georges suddenly ordered air priority away from the Belgian plain to the threatened center of his front further south in the Sedan area. Prioux's cavalry formations now had little air cover.

Having surrendered the initiative and with only limited air reconnaissance, Prioux could only wait to see where the Panzers would concentrate. His right flank he anchored on the Meuse. He held Huy with two battalions of motorised heavy infantry plus some dragoons and artillery. His left was in touch with British light cavalry and parts of the Belgian Cavalry Corps delaying the enemy along the axis St. Trond-Tirlemont. German armoured cars followed by infantry infiltrations probed toward Tirlemont that afternoon, leading the French Cavalry Corps to order a squadron of tanks plus one of the divisional reconnaissance groups at its disposal to the area. British reinforcements also reached the scene. The German effort was essentially a reconnaissance and diversionary probe. The main preoccupation of both sides was the open area around Hannut.

On the ground, Stever's 35th Panzer Regiment advancing toward Hannut ran into fierce resistance. The French armour was deployed under cover and during the battle counter-attacked several times. The French forces then yielded Hannut without a fight. German forces attempted to outflank the town, unaware of the retreat. Some 50 light Panzers ran into the French strongpoint at Crehen. French defences equipped with 21 Hotchkiss tanks of the 2d Cuirassiers, supported by parts of the 76th Artillery Regiment plus fire from the nearby 2d DLM. 

The dragoons lost heavily, but it was the Hotchkisses which carried the burden of the defence, despite the loss of their commander. Firing from prepared positions, German medium tanks attempted to pin down the French while the light tanks moved around the French position. The main French forced retreated to Medorp. The encircled 2d Cuirassiers were freed by an armoured counterattack from the 2DLM. SOMUA S35s breached the German line and the French units broke out, suffering heavy losses in the process. The right flank of the 4th Pz. Div. was now dangerously exposed.

Rushing from the German staging area at Oreye, some 11 km to the northeast of Hannut, the 3rd Pz. Div. moved up to cover this threat. At 16:30 P.M, German 6th Army requested air reconnaissance. The Luftwaffe reported French armour at Orp and motorised units at Gembloux. Reichenau, commander of the German 6th Army, ordered Hoepner to send XVI Corps forward to Gembloux to prevent the French from organising a defence, but Hoepner continued to worry about his stretched supply lines and especially his exposed flanks. His neighbouring IV Corps had elements in the St. Trond area probing toward Tirlemont, worrying Prioux, but the XXVII Corps was still held up north of Liege 38 km east of Hannut, leaving Hoepner's southern flank exposed.

The German solution was to build an advance guard of one Panzer battalion and one rifle battalion supported by two artillery groups to push forward to Perwez, 18 km south west of Hannut, if possible. But Stever ordered his guard that if they met serious resistance the attack was to be halted. The force advanced under heavy air and artillery cover against the French strongpoint at Thisnes, and simply ignored the French counterattack at Crehen in its rear. The streets of Thisnes were barricaded. Heavy French artillery and other fire met the attack, stopping the tank company on point. 

The remainder of the German force flanked the French position to their right, though poor visibility hampered the movement. The guard finally reached the western edge of the town, only to meet strong artillery fire from the neighbouring French strongpoint in Wansin which continued to increase. The force was ordered to regroup its tanks and riflemen and to secure a perimeter. But before this could be done, French SOMUAs counterattacked knocking out the Panzer Regiment commander's tank. After hard fighting both French and German tanks pulled back in the darkness, stumbling into each other on occasion. The French retreated to Merdorp and the Panzers to the Hannut area.

At 20:00 Stever spoke to Hoepner, telling him he was certain two French mechanised divisions were before him, one to his front and one behind the Mehaigne river. Both agreed to mount a major offensive the next day. According to the plan the 4th Pz. Div. would concentrate to Gembloux's right and operate jointly with the 3rd Panzer, which would receive air support from Fliegerkorps VIII.

The Germans attacked that night, testing the French defences. The French strongpoint at Wansin fought all night against German riflemen, finally withdrawing in the early hours of 13 May. The front of the 3rd DLM remained, holding positions near Tienen, Jandrenouille and Merdorp. The 2nd DLM also held its original front. The only breach of the line occurred at Winson, where the 2nd DLM met the 3rd DLM. Hoepner had failed to take his objective.[29] "On the very first day, French armour — contrary to German reports — definitely emerged victorious".
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13.5.
To the south-east of the plain, German forces began their assault over the Meuse River: the Wehrmacht's principal effort. To the north, General Hoepner launched spoiling attacks and tied down the powerful French First Army, so that it could not intervene. Hoepner believed the newly arrived 3rd Pz. Div. had only weak enemy forces before it; the 4th Pz. Div. on the other hand, he believed, faced strong French mechanised forces at Hannut and Thisnes—which the French had in fact already abandoned—and possibly a second French mechanised division south of the Mehaigne. The Luftwaffe struck in the late morning to soften the enemy defences. The 3rd Pz. Div. advanced on Thorembais. The 4th Panzer was to move in parallel on Perwez, against an expected strong Belgian anti-tank line. XVI Army Corps thus fell back on the 6th Army's instruction to push immediately on Gembloux.

The French 12th Cuirassiers and to the south the 3rd Battalion of the 11th Dragoons, fought off waves of German infantry supported by armoured vehicles. The German 18th Infantry Division still penetrated their positions. The French command planned to counter-attack with tanks from the 1st Cuirassiers unit to restore their lines, but dropped those plans due to developments on the rest of the 3rd DLM's front. In the afternoon the French command ordered a retreat. The Allied force escaped as the German infantry was too slow in following up their success. The 2nd DLM was positioned just south of the planned axis of Hoepner's attack. 

In the early morning the 2nd DLM sent some 30 SOMUA S-35s from the Mehaigne to the line Merdorp-Crehen to relieve the pressure on the 3rd DLM. The attack was repulsed by heavy enemy tank and anti-tank fire near Crehen with crippling losses. General Bougrain, commanding the 2nd DLM, signalled enemy infiltrations and attacks by armoured cars over the Mehaigne river at Moha and Wanze, just north of Huy, attacks which threatened to cut off the large Belgian garrison in Huy. Bougrain diverted his tank reserves to try to retrieve the situation. At 15:00 a French reconnaissance aircraft reported large concentrations of German armour south-east of Crehen. The 2nd DLM no longer had reserves available to intervene.

Bougrain's Dragoons and motorised infantry were strung out in a series of isolated strongpoints and thus were vulnerable to infiltration. Bougrain refused the offer of the Belgian III Corps, retreating through his front from the Liege area, to reinforce his troops on the Mehaigne river. Prioux's lack of attention to French defensive doctrine and concentration had allowed decentralised command to continue which damaged the French operational performance which created problems for the French defence.

The German command for its part, worried by the potential of the 2d DLM to interfere with its main attack, juggled force marching infantry units between its XVI and XXVII Corps and scraped together four units from the 35th, 61st, and 269th Infantry Division advancing via Liege, along with air support and some armoured cars. These forces infiltrated between the French strongpoints north of Huy and drew out Bougrain's armour. This critical German success-tying down French armour with infantry freed Hoepner to concentrate against Prioux's front west of Hannut. Had Bougrain concentrated his armour for an advance to the north or northeast, he might have caused untold problems for the German plan. But Prioux gave him no such mission.

The real focus of the battle on 13 May lay west of Hannut. An order arrived from the 6th Army to Hoepner, not only to break through to Gembloux, but to pursue the enemy west of that position. Hoepner concentrated all of his Corps's Panzer and rifle battalions, including about 560 operational tanks, aided on their right by the 18th Infantry Division of the IV Corps, on a front of some 12 kilometers. The 3rd Panzer on the north facing Marilles and Orp, the 4th Panzer facing Thisnes and Merdorp. The 3rd Panzer Brigade of the 3rd Panzer Division moved out at about 11:30. with its 5th Panzer Regiment on he right and its 6th on the left, the Brigade Commander moved forward with the 5th Regiment. 

By noon the tanks were in action in the barricaded and mined towns along the Petite Gette river. After 90 minutes of heavy fighting, both Panzer regiments succeeded in pushing elements of the French defenders over the stream, the 5th before Marilles, the 6th at Orp. The German command ordered most of the 6th Regiment to turn south toward Jandrain and Jandrenouille, where the terrain was more favourable and they could aid the 4th Panzer Division. Operating on the east and west bank of the Petite Gette, the 6th Regiment ran into French armour in the Orp area, and was then attacked by further French armour. The German battalions combined to defeat the attack.

Tank battle at Orp
The German forces attacked in the afternoon. The 3rd Pz. Div. on the north facing Marilles and Orp, the 4th Pz. Div. facing Thisnes and Merdorp. The 5th and 6th Panzer Brigade of the 3rd Panzer Division faced an attack by French armour, and both sides clashed while on the offensive. The Panzers were numerically superior and could be seen moving in large formations while the French operated in small groups and fired more slowly. From 15:00 to 15:48 the 3rd Panzer Brigade issued repeated, urgent calls for anti-tank units and the Luftwaffe to deal with French tanks. 

The 2nd Battalion, 5th Panzer Regiment, still opposite Marilles, suddenly found itself attacked in the flank and rear by "superior" French armoured forces. The 3rd Panzer Brigade war diary recorded the 15 minutes during which the 2nd Battalion stood alone. The 1st Battalion, 5th Panzer Regiment, seeing victory on the left, sent the 1st Battalion back to his right, bringing the fight before Marilles to a successful conclusion at about 16:00. As the riflemen secured Orp, the Panzers put out an urgent call for 37 and 75 mm ammunition.

That morning the strongpoints of the 2d Battalion, 11th Dragoons suffered serious losses to air and artillery bombardment, while German motorcyclists followed by armoured cars searched for infiltration and crossing points. From about 11:30, the 3d DLM signalled some 80 Panzers opposite Marilles, some 100 before Orp. The dragoons defended their strongpoints supported by their organic Hotchkiss squadron, but their resistance began to crumple at about 13:30 as German numbers and lack of munitions told.

Colonel Dodart des Loges, commanding the northern sector of the 3rd DLM front, ordered a retreat, As the remaining dragoons withdrew, their Hotchkiss H35 tanks together with two Hotchkiss squadrons from the 1st Cuirassiers counter-attacked. The French pushed the German armour back to the stream. Losses were about even, the French claiming six Panzers for the loss of four. Colonel de Vernejoul commanding the 1st Cuirassiers dispatched 36 SOMUA S-35s to halt German armour advancing from Orp to Jandrain. German armoured forces then surprised the French as they attacked. An equal number of Panzers attacked from cover defeating the French attack.

This offensive was the principal effort of the 3rd DLM to check the 3rd Pz. Div. The 2nd DLM launched raids against the still vulnerable flanks of the 4th Pz. Div., and some small groups of French tanks broke through but were quickly dealt with by the German 654th Anti-tank battalion, attached to the 4 Pz. Div. Apart from these isolated and sporadic raids the 2nd DLM did not make any further attempts to attack the 4th Pz. Div.'s flank.

Afternoon actions
In the afternoon the 4th Pz. Div. began an assault on Medorp. As the French artillery opened fire and German artillery responded, the French pushed armour into the abandoned town and skillfully changed position making the Panzers struggle to strike their targets. The German tanks decided to bypass the town around its left flank, but this exposed the German infantry who were forced to give ground against encroaching French armour. The Panzers quickly did a u-turn and engaged the French in the open. Initially the French held the advantage due to their superior armour and firepower, but German tactics of schwerpunkt, concentrating their armour on the vital point, began to tell. Small groups of French infantry infiltrated and attacked from the rear but German infantry crushed any resistance.

At this point the 3rd Pz. Div. and 4th Pz. Div. were advancing to Jandrain. Outside the town a bitter tank battle took place. The Panzers prevailed through numbers and reported 22 French SOMUA S-35s totally destroyed. The German forces secured the area and town. German forces reported taking 400 prisoners, and capturing four and five tanks. The French forces, the 2nd and 3rd DLM, began a general retreat westward. The Panzer Divisions, no longer fearing an attack on their flanks, advanced and engaged the remnants of the enemy in the evening. 

The 3rd Panzer Brigade claimed a tally for the day of 54 French tanks knocked out, 36 by the 5th Panzer Regiment and 18 by the 3rd Panzer Regiment. Its own losses were listed as "slight". The 6th Panzer regiment reported a provisional loss total of only two tanks.The Germans suffered many more tanks disabled, but as the battlefield was secured a great many were repaired. The remainder of the 3rd DLM was in line behind the Belgian antitank obstacle on the front Beauvechain-La Bruyere-Pietrebais-Incourt-Perwez. The next morning the 2nd DLM fell back into line south of Perwez.
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Battle on 14 May
Attack on Perwez
The German attack on Perwez came in the morning of 14 May. General Stumpff's 3rd Pz. Div. was to engage the new Allied line near Gembloux, whilst General Stever and the 4th Pz. Div. were to break through its centre at Perwez. Hoepner ordered the attack to commence without infantry support, but could not break through the French positions.

The 4th Pz. Div. engaged French armour, which resisted heavily in wooded areas around Perwez. After hard fighting the French defences were destroyed with the help of German infantry. The French First Army had redistributed and spread its tank battalions behind the infantry. Spread out and unsupported, they were defeated by the concentration of numerically superior German combined arms teams.

The 3rd Pz. Div. was halted due to fierce resistance from 2nd DLM. Bitter fighting resulted and the appearance of large numbers of French tanks panicked the German Command into thinking a major counter-attack was developing, when in fact they were just rearguard actions. Both sides suffered significant losses in armour, but as night fell the 2nd DLM halted rearguard actions and the German Command regained its composure. The Allied forces had gained themselves time to reorganise their forces to respond to another major German assault on 15 May.

Belgia 1940 - armed forces comparison

Toukokuussa 1940 Belgian maavoimiin kuului viisi vakinaista ja kaksi reservin armeijakuntaa sekä yksi ratsuväki armeijakunta. Näissä oli yhteensä kuusi vakinaista ja kaksitoista reservi jalkaväki divisioonaa, niissä kaikissa kolme jalkaväkirykmenttiä, kenttätykistörykmentti ja pioneeripataljoona. Ratsuväkiarmeijakuntaan kuului kaksi ratsuväkidivisioonaa. Näiden lisäksi oli viidessä armeijakunnassa tykistörykmentti ja pioneeripatataljoona. Vakinaisten joukkojen lisäksi oli kaksi rykmenttiä puolisotilaallisia joukkoja, kaksi rykmenttiä rajajoukkoja, linnoitusjoukkoja sekä kaksi ilmatorjuntarykmenttiä.

Maavoimat oli ryhmitetty ja varustettu puolustusta silmällä pitäen. Aktiivipalveluksessa olevat joukot oli kuitenkin varustettu pääosin ajanmukaisin varustein. Jalkaväkidivisiooniin kuului 48 kappaletta 47 millimetrin panssarintorjuntatykkejä, 75 millimetrin kranaatinheittimiä. Ratsuväellä oli 150 kappaletta T-13 ja 45 kappaletta T-15 panssarivaunuja. 

T-13 vaunu oli todellisuudessa Belgiassa FN:n lisenssivalmistama Vickers Carden Lloyd type I tai type III kevyt panssarivaunu, jonka torniin oli asennettu 47 millimetrin panssarintorjuntatykki. 

T-15 vaunu oli raskaalla konekiväärillä tai 37 millimetrin tykillä aseistettu brittiläisvalmisteinen Carden Lloyd M1934.

Ratsuväkidivisioona oli mekanisoitu vuonna 1937 varustamalla ne 23 kappaleella Renaultin valmistamia Auto-Mitrailleuses de Combat, joista osa varustettiin sodan alla 47 millimetrin tykkitornein. Reservidivisioonat olivat kuitenkin merkittävästi heikommin varustetut.

Liikekannallepano alkoi 25. elokuuta 1939 ja toukokuuhun 1940 mennessä oli perustettu 18 jalkaväkidivisioonaa, kaksi osittain motorisoitua Chasseur Ardennais -yhtymää ja kaksi motorisoitua ratsuväkidivisoonaa. Palveluksessa oli kaikkiaan 600000 miestä ja liikekannallepanoa jatkamalla oli vahvuus voitu nostaa noin 900 000 mieheen. 

Divisioonista muodostettiin viisi aktiivista ja kaksi reserviarmeijakuntaa, joihin kuului edellä mainittujen lisäksi viisi reservijalkaväkidivisioonaa, prikaati polkupyörin varustettuja rajajoukkoja. Ratsuväki muodosti yhden kaksi divisioonaisen ja prikaatilla vahvennetun armeijakunnan. Maavoimien tukena oli kaksi ilmatorjunta- ja neljä kenttätykistörykmenttiä sekä linnake-, pioneeri- ja viestijoukkoja.

Laivasto oli vuonna 1939 merkityksetön ja siihen kuului 14 saksalaisten ensimmäisen maailmansodan lopulla hylkäämää moottoritorpedovenettä. Britanniasta vuonna 1920 ostettu Zinnia ei kuitenkaan parantanut laivaston kalustoa merkittävästi ja alus poistettiin palveluksesta.

Ilmavoimien modernisointi oli juuri alkanut. Belgia oli tilannut Brewster Buffalo, Fiat CR.42, Hawker Hurricane, Koolhoven FK56, Fairey Battle ja Caproni Ca.312 sekä Ca.335 -koneita. 

                                                     
Näistä ainoastaan Fiatit, Hurricanet ja Battlet oli vastaanotettu. Modernin kaluston puute pakotti käyttämään vanhentuneita Fairey Fox -pommittajia hävittäjinä. Ilmavoimilla oli kaikkiaan noin 250 lentokonetta, joista 90 hävittäjiä. 

Hurricane

                                                        Fiat CR 42 
Koneista kuitenkin vain viitisenkymmentä oli moderneja. Jos kalustoon lisätään kaikkien puolustushaarojen yhteys- ja kuljetuskalusto konevahvuus nousee 377 koneeseen, joista 10. toukokuuta 1940 oli 180 palveluskelpoisia. Ilmavoimienkomentajana oli Paul Hiernaux, joka muodosti ilmavoimista kolme lentorykmenttiä.


1. rykmentti oli sijoitettu Biersetiin, Deurneen ja Gossoncourtiin tehtävänään tukea maavoimien taistelua. Rykmentin kalusto oli 40 Fairey Fox, ja kymmenen Renard 31 lentokonetta. II rykmentti oli sijoitettu Schaffeniin ja Nijveliin. Kalustona rykmentillä oli 30 Fairey Fox, 25 Fiat CR.42, 15 Gloster Gladiator ja 11 Hawker Hurricanea. III rykmentti oli Everessä kalustonaan 27 Fairey Foxia ja 13 Fairey Battlea.
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Ranska 
Ranskan 1. armeijan, johon kuului 10 jalkaväkidivisioonaa ja kaksi kevyttä mekanisoitua divisioona, tehtävänä oli puolustaa 25 mailia leveää Gembloux'n aukkoa. Armeijaan kuuluva kenraali René Prioux'n komentama ratsuväkiarmeijakunta oli määrätty tukemaan Belgian asevoimia. Armeijakuntaan kuuluivat 2. ja 3. mekanisoidut divisioonat. Panssarijoukkoihin kuului kaikkiaan 176 Somua S35 ja 239 Hotchkiss H35 vaunua.

Ranskan 7. armeija puolusti liittoutuneiden pohjoista siipeä. Armeijaan kuuluivat 1. mekanisoitu divisioona sekä 25. ja 9. motorisoidut divisioonat, joiden lisäksi siihen kuului vielä neljä jalkaväkidivisioonaa. Armeijan tehtävänä oli käskyn saatuaan edetä Alankomaiden Bredaan. Ranskan 9. armeija, johon kuului 5. motorisoidun divisioonan lisäksi ainoastaan jalkaväkiyksiköitä. Armeijan tehtävänä oli puolustaa liittoutuneiden eteläistä sivustaa Sambren eteläpuolella ja Sedanin pohjoispuolella. Ranskan rajan takana oli vielä Ranskan 2. armeija tehtävänään Ranskan ja Belgian välisen rajan suojaaminen Sedanista Montmédyyn.
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Brittiläinen siirtoarmeija

Lordi Gortin johtamaan brittiläiseen siirtoarmeijaan kuului kaksi kaksi divisioonaista armeijakuntaa, joissa oli yhteensä 152 000 miestä. Siirtoarmeija vastaanotti rintamavastuun Ranskan maavoimien joukoilta 3. lokakuuta 1939 alkaen Mauldesta Halluiniin tukeutuen Lys-jokeen Halluinista Armentièresiin. Joukkojen oikealla sivustalla oli Ranskan 1. armeija ja vasemmalla Ranskan 7. armeija. Armeijan esikunta oli Arrasissa. 
Maajoukkojen lisäksi oli 6859 ilmavoimien miestä. 
Kenraaliluutnantti Sir Ronald F. Adamin komentama III armeijakunta perustettiin ja se oli valmis 9. huhtikuuta 1940.

Huhtikuun loppuun mennessä siirtoarmeijan taistelujoukkojen vahvuus oli noussut kymmeneen divisioonaan eli 394 165 mieheen Lisäksi oli 18 347 territoriaalijoukkojen sotilasta lähetetty linnoitustehtäviin ja koulutettavaksi, 17 665 tukikohtiin sijoitettua reservimiestä, 78 864 yhteyksien rakentamiseen, 23 545 erilaisiin esikuntatehtäviin, sairaaloihin ja muihin tukitehtäviin. 9 051 miestä oli siirtymässä paikasta toiseen ja 23 515 sijoittamatonta miestä sekä 
23 545 miestä selustassa toimiviin huolto- ja tukiyksiköihin. 
Taistelujoukkojen kalustona oli 1 280 tykistöasetta ja 310 panssarivaunua.
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Saksa
Fedor von Bockin komentama Saksan armeijaryhmä B:hen kuului 26 jalkaväki- ja kolme panssaridivisioonaa, joiden tehtävänä oli vallata Alankomaat ja Belgia. Saksan 6. armeijan XVI armeijakuntaan kuuluivat 3. ja 4. panssaridivisioona osallistuivat Belgian valtaukseen. 18. armeijaan liitetty 9. panssaridivisioona osallistui ensin Alankomaiden valtaukseen ja sen päätyttyä kääntyisi armeijan mukana Belgiaan suojaten divisioonan suojatessa armeijan pohjoisen sivustan. Armeijanryhmällä oli kaikkiaan 808 panssarivaunua.

Fort Eben-Emaelin rajalinnoituksen valtausta varten armeijaryhmän tueksi siirrettiin 7. laskuvarjodivisioonasta ja 22. maahanlaskudivisioonasta muodostettu taisteluryhmä Koch. Armeijaryhmän tukena oli 1 815 taistelulentokonetta, 487 kuljetuslentokonetta ja 50 liitokonetta. Ilmavoimien kenraalin Alfred Kellerin komentama IV ilma-armeijakunta vastasi ilmatuesta apunaan kenraalimajuri Wolfram von Richthofenin VIII ilma-armeijakunta. Näiden apuna oli vielä eversti Kurt-Bertram von Döringin 2. hävittäjäryhmä.
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Battle of Belgium / Numbers of battle departments   

Date 10–28 May 1940 Location Belgium and Luxembourg Result Decisive German victory Belgian surrender Establishment of Belgian government and army in exile Territorial changes German occupation of Belgium
Belligerents
Belgium  France  United Kingdom  Luxembourg  Netherlands	Germany
Commanders and leaders
King Leopold III (POW)  Hubert Pierlot  Maurice Gamelin  Maxime Weygand  Lord Gort	Gerd von Rundstedt  Fedor von Bock
Strength
144 divisions 13,974 guns 3,384 tanks 2,249 aircraft	141 divisions 7,378 guns 2,445 tanks 5,446 aircraft (4,020 operational)
Casualties and losses
222,443+ casualties (200,000 captured) ~900 aircraft	Uncertain (see German casualties)

                  
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The Belgian Army could muster 22 divisions, which contained 1,338 artillery pieces but just 10 AMC 35 tanks. However, the Belgian combat vehicles included 200 T-13 tank hunters. These had an excellent 47 mm antitank gun and a coaxial FN30 machine gun in a turret. The Belgians also possessed 42 T-15s. They were called armoured cars but were actually fully tracked tanks with a 13.2 mm turret machine gun. 

The standard Belgian anti-tank gun was the 47 mm FRC, towed either by trucks or by fully tracked armoured Utilitie B-tractors. One report states that a round from a 47 mm gun went straight through a Sd kfz 231 and penetrated the armour of the Panzer IV behind it. These Belgian guns were better than the 25 mm and 37 mm guns of respectively the French and the Germans.

The Belgians began mobilisation on 25 August 1939 and by May 1940 mounted a field army of 18 infantry divisions, two divisions of partly motorised Chasseurs Ardennais and two motorised cavalry divisions, a force totaling some 600,000 men.
Belgian reserves may have been able to field 900,000 men. The army lacked armour and anti-aircraft guns.

After the completion of the Belgian Army's mobilisation, it could muster five Regular Corps and two reserve Army Corps consisting of 12 regular infantry divisions, two divisions of Chasseurs Ardennais, six reserve infantry divisions, one brigade of Cyclist Frontier Guards, one Cavalry Corps of two divisions, and one brigade of motorised cavalry. The Army contained two anti-aircraft artillery and four artillery regiments, and an unknown number of fortress, engineer, and signals force personnel.

The Belgian Naval Corps (Corps de Marine) was resurrected in 1939. Most of the Belgian merchant fleet, some 100 ships, evaded capture by the Germans. Under the terms of a Belgian–Royal Navy agreement, these ships and their 3,350 crewmen were placed under British control for the duration of hostilities. The General Headquarters of the Belgian Admiralty was at Ostend under the command of Major Henry Decarpentrie. The First Naval Division was based at Ostend, while the Second and Third divisions were based at Zeebrugge and Antwerp.

The Aéronautique Militaire Belge (Belgian Air Force - AéMI) had barely begun to modernise their aircraft technology. 

                                                Koolhoven F.K.56 trainers

                                                           

                                                              Caproni Ca.312

                                                          Caproni 335 (dive bomber)

The AéMI had ordered Brewster Buffalo, Fiat CR.42, and Hawker Hurricane fighters, Koolhoven F.K.56 trainers, Fairey Battle and Caproni Ca.312 light bombers, and Caproni Ca.335 fighter-reconnaissance aircraft, but only the Fiats, Hurricanes, and Battles had been delivered. The shortage of modern types meant single-seat versions of the Fairey Fox light bomber were being used as fighters. 

The AéMI possessed 250 combat aircraft. At least 90 were fighters, 12 were bombers and 12 were reconnaissance aircraft. Only 50 were of reasonably modern standard. When liaison and transport aircraft from all services are included, the total strength was 377; however only 118 of these were serviceable on 10 May 1940. Of this number around 78 were fighters and 40 were bombers.


The AéMI was commanded by Paul Hiernaux, who had received his pilot's license just before the outbreak of World War I, and had risen to the position of Commander-in-Chief in 1938. Hiernaux organised the service into three Régiments d'Aéronautique (air regiments): the 1er with 60 aircraft, the 2ème with 53 aircraft, and the 3ème with 79 aircraft.
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French forces  First Army
The Belgians were afforded substantial support by the French Army. The French 1st Army included General René Prioux's Cavalry Corps. The Corps was given the 2nd Light Mechanized Division (2e Division Légère Mécanique, or 2e DLM) and the 3rd Light Mechanized Division (3e DLM), which were allocated to defend the Gembloux gap. 

The armoured forces consisted of 176 of the formidable SOMUA S35s 

and 239 Hotchkiss H35 light tanks. Both of these types, in armour and firepower, were superior to most German types. 

The 3e DLM contained 90 S35s and some 140 H35s alone.

The French 7th Army was assigned to protect the northernmost part of the Allied front. It contained the 1st Light Mechanized Division (1e DLM), the 25th Motorised Division and the 9th Motorised Division. This force would advance to Breda in the Netherlands.

The third French army to see action on Belgian soil was the 9th. It was weaker than both the 7th and the 1st Armies. The 9th Army was allocated infantry divisions, with the exception of the 5th Motorized Division. Its mission was to protect the southern flank of the Allied armies, south of the Sambre river and just north of Sedan. Further south, in France, was the French 2nd Army, protecting the Franco-Belgian border between Sedan and Montmédy. The two weakest French armies were thus protecting the area of the main German thrust.

British forces  British Expeditionary Force
The British contributed the weakest force to Belgium. The B.E.F, under the command of General Lord Gort VC, consisted of just 152,000 men in two corps of two divisions each. It was hoped to field two armies of two Corps each, but this scale of mobilisation never took place. The I Corps was commanded by Lt-Gen. John Dill, later Lt-Gen. Michael Barker, who was in turn replaced by Major-General Harold Alexander. Lt-Gen. Alan Brooke commanded II Corps. Later the III Corps under Lt-Gen. Ronald Adam was added to the British order of battle. 

A further 9,392 Royal Air Force (RAF) personnel of the RAF Advanced Air Striking Force under the command of Air Vice-Marshal Patrick Playfair was to support operations in Belgium. By May 1940 the B.E.F had grown to 394,165 men, of whom more than 150,000 were part of the logistical rear area organisations and had little military training. On 10 May 1940, the B.E.F comprised just 10 divisions (not all at full strength), 1,280 artillery pieces and 310 tanks.

German forces  German Army Group B
Army Group B was commanded by Fedor von Bock. It was allocated 26 infantry and three Panzer divisions for the invasion of the Netherlands and Belgium. Of the three Panzer Divisions, the 3rd and 4th were to operate in Belgium under the command of the 6th Army's XVI Corps. The 9th Panzer Division was attached to the 18th Army which, after the Battle of the Netherlands, would support the push into Belgium alongside the 18th Army and cover its northern flank.

Armour strength in Army Group B amounted to 808 tanks, of which 282 were Panzer Is, 288 were Panzer IIs, 123 were Panzer IIIs and 66 were Panzer IVs; 49 command tanks were also operational. The 3rd Panzer Division's armoured regiments consisted of 117 Panzer Is, 128 Panzer IIs, 42 Panzer IIIs, 26 Panzer IVs and 27 command tanks. The 4th Panzer Division had 136 Panzer Is, 105 Panzer IIs, 40 Panzer IIIs, 24 Panzer IVs and 10 command tanks. The 9th Panzer, scheduled initially for operations in the Netherlands, was the weakest division with only 30 Panzer Is, 54 Panzer IIs, 123, 66 Panzer IIIs and 49 Panzer IVs.

The elements drawn from the 7th Air Division and the 22nd Airlanding Division, that were to take part in the attack on Fort Eben-Emael, were named Sturmabteilung Koch (Assault Detachment Koch); named after the commanding officer of the group, Hauptmann Walter Koch. The force was assembled in November 1939. 

It was primarily composed of parachutists from the 1st Parachute Regiment and engineers from the 7th Air Division, as well as a small group of Luftwaffe pilots. The Luftwaffe allocated 1,815 combat, 487 transport aircraft and 50 gliders for the assault on the Low Countries.

The initial air strikes over Belgian air space were to be conducted by IV. Fliegerkorps under General der Flieger Generaloberst Alfred Keller. Keller's force consisted of Lehrgeschwader 1 (Stab. I., II., III., IV.), Kampfgeschwader 30 (Stab. I., II., III.) and Kampfgeschwader 27 (III.). On 10 May Keller had 363 aircraft (224 serviceable) augmented by Generalmajor Wolfram von Richthofen's VIII. Fliegerkorps with 550 (420 serviceable) aircraft. They in turn were supported by Oberst Kurt-Bertram von Döring's Jagdfliegerführer 2, with 462 fighters (313 serviceable).

                                                               Hencshell 123 

Keller's IV. Fliegerkorps headquarters would operate from Düsseldorf, LG 1. KG 30 which was based at Oldenburg and its III. Gruppe were based at Marx. Support for Döring and Von Richthofen came from North Rhine-Westphalia and bases in Grevenbroich, Mönchengladbach, Dortmund and Essen.