During world war 2 the Germans made good use of obsolete world war 1 French Renault FT 17 light tanks by removing the turret and emplacing them as static defences in the Atlantic Wall.

The turret appeared in two variants. The first was octagonal, polygonal, riveted of rolled armour plate, thickness 16mm. The second was round, developed by Berliet Works (also called Girod turret) welded of curved armour belt 22mm thick and cast top 16mm thick.

There were two variants of armament originally used in the turrets of  the FT-17.  The tanks had either 37mm Puteaux SA-18 L/21 low velocity gun with 237 rounds or 8mm Hotchkiss M Mle.14 machine gun with up to 4800 rounds.  During the 30’s the tanks had their machine guns changed to the Chatellerault  receiving an unofficial designation FT-31.

Other FT 17 turrets used included 8mm Hotchkiss machine gun, 37mm anti-tank gun and a turret without any armament as an observation point.