Tanks in World War I
The continued need for four men to drive the tank was solved with the Mark V which used Wilson's epicyclic gearing in 1918. Also in 1918 the French produced the Renault FT, the result of a co-operation between Estienne and Louis Renault. As mentioned before, it had the innovative turret position, and was operated by two men. At just 8 tons it was half the weight of the Medium A "Whippet" but the version with the cannon had more firepower. It was conceived for mass production, and the FT became the most produced tank of World War I by a wide margin, with over 3,000 delivered to the French Army. Large numbers were used by the Americans and several were also lent to the British.
Panzer II
The Panzer II had a crew of three men. The driver sat in the forward left hull with the gearbox on the right. The commander sat in a seat in the turret, and was responsible for aiming and firing the cannon and co-axial machine gun, while a loader/radio operator sat on the floor of the tank behind the driver. He had a radio on the left and several 20mm ammunition storage bins.