Were tanks used to carry heavy weapons during World War 1?
No. In military terms the tank in WW1 was so underpowered that it could barely move itself ! But then the motor car was in its infancy, the largest thing a tank had in terms of weaponry was a small cannon type gun or a heavy machine gun. It is noticable that the tank in WW2 improved noticably post 1940, but in WW1, although effective in small measure, the tank had novelty value because of its invincibility. Mechanical failure however made it vulnerable & unreliable.