If tanks at this time have generational differences, then the "Shire A1" tank and the A7V tank actually exist across generations.
The "Shire A1" tank turret can rotate, while the A7V tank cannot.
This seems like a minor difference, after all, many times the effectiveness of a tank is judged on whether its cannon can penetrate the opponent's armor, but actual combat proves otherwise.
Because the A7V tank does not have a rotating turret, its cannon's firing angle is significantly restricted. When the target is about to move to the side, it can no longer fire, forcing the driver to maneuver the vehicle.
This situation could lead to a particularly embarrassing point: the driver maneuvers and stops, but the gunner finds the target already out of the firing angle again, forcing the driver to maneuver again... such repetition might leave the gunner never able to aim or fire.
