qsy-complains-a-lot:

Super-Heavy Tank “Char FCM 2C”

Designed in 1917 and produced in 1921 by the Forges et Chantiers de la Méditerranée in Marseille.
48mm thick armor, canon de 75 main gun in a rotating turret and 8 Hotchkiss 8mm Lebel machine guns.

The 2C’s lengthy development polarized French politics of the time and led to a design that, while being the largest tank ever operational to this day, was more useful as a propaganda tool due to being extremely rare and borderline obsolete by the following decade. Only 10 were made, and each of them required a crew of 12.
Sadly enough that’s what it took for the French army to provide a turret large enough for several crew member to fit in.

Inside the Char 2c