The Renault FT, frequently referred to in post-World War I literature as the “FT-17” or “FT17”, was a French light tank that was among the most revolutionary and influential tank designs in history. The FT was the first production tank to have its armament within a fully rotating turret.[note 1] The Renault FT’s configuration – crew compartment at the front, engine compartment at the back, and main armament in a revolving turret – became and remains the standard tank layout. As such, historians of armoured warfare have called the Renault FT the world’s first modern tank.
Additional Information: en.wikipedia.org/wiki/Renault_FT-17