In 1939, the French Army initiated a project for a “Fortress Tank” with large calibre gun intended to break through the Siegfried Line of Germany.
AMX and Forges et Chantiers de la Méditerranée(FCM) company took part in this project.
The bigger turret is located at the front of the tank and has a commander cupola on top.
A pair of machine guns is located at the side of the hull at the front and the rear.
[1][2][3] The AMX Tracteur C design was presented to the French Army but was rejected by them in favour of the FCM F1.