The design was changed to a land tracked vehicle only. The Germans developed the Skorpion system, which scattered AT2 mines from a tracked vehicle. The system is modular and can be mounted on almost any wheeled or tracked vehicle. The ground vehicles were to be based on a common tracked vehicle chassis. Most shallow well drilling machines are mounted on large trucks, trailers, or tracked vehicle carriages. Mounted on a BV-206 all-terrain tracked vehicle this version has an instrumented range of . In December 1949, Signal School was re-designated as Signal and Tracked Vehicle School Battalion. The trailing T in the number denotes a tracked vehicle. In Russia, Vasiliy Mendeleev designed a tracked vehicle containing a large naval gun. A snowcat is an enclosed-cab, truck-sized, fully tracked vehicle designed to move on snow. Their inspiration was a miniature French tracked vehicle found after France was defeated in 1940. It was a small light tracked vehicle with a turret armed with one machine gun. "Long Track" on a tracked vehicle (a modified AT-T) and "Flat Face" on a van.