Pionierwagen Unic P-107 U.304(f)

In the 1920s and 1930s Citroen developed a long line of half-tracks based on the Kegresse patent. In 1934, the company introduced its newest and more powerful P107 model as a successor to the Citroen-Kegresse P17. But before mass production could take place, Citroen went bankrupt and its new owner, Michelin, chose to focus on the civilian markets. Unic got a license for Kegresse patent, and took over the production of the P107. During World War II, the Germans used these captured half-tracks as artillery tractors, pionierwagens and aviation service vehicles.