T-34 Assault Tank with D-11 Turret
The T-34 Assault tank was a development of the T-34 to fit a 122mm U-11 Howitzer onto the reliable T-34 chassis. The turret had to be enlarged to house the gun. As an alternative a D-11 turret was fitted allowing the T-34 Assault Tank to mount the 122mm assault gun D-6 which was a simplified version of the U-11. However, the development was not progressed and the T-34 Assault Tank never entered service.