In the 1920s and 1930s Citroën developed a long line of half-tracks based on the Kégresse patent. In 1934, the company introduced its newest and more powerful P107 model as a successor to the Citroën-Kégresse P17.
But before mass production could take place, Citroën went bankrupt and its new owner, Michelin, chose to focus on the civilian markets. Unic was therefore able to acquire a license for Kégresse patent, and took over the production of the P107.
Type: Half-track prime mover/cargo transport
Used: France, Nazi Germany
Number built: 2000
Weight: 3500 kg empty, 5000 kg loaded
Length: 4.85 m
Width: 1.80 m
Height: 2.28 m
Engine: P39 liquid cooled 4-cyl., carburettor, 4-stroke OHV, 3450cc 62 hp/2800 rpm
Speed: 45 km/hTwo main variants of the P107 were accepted in French military service: a light prime mover for the 75 mm and short 105 mm artillery guns, and a platform cargo transport for engineer units.
More than 2000 examples were in service in 1940.
During World War II, the Germans used these captured half-tracks extensively under the name Leichter Zugkraftwagen 37.
With German half-tracks in short supply, Major Alfred Becker of the 21. Panzerdivision (which in 1944 was stationed near Caen in Normandy) suggested converting captured French vehicles.
He ordered the conversion of several hundred Unic half-tracks into U304(f) light armoured personnel carriers.