I was watching one of my a allied M4 - 75mm tank fire the rockets on his turret, he was saying that when you move your turret to aim on a target. That the rockets would still fire straight ahead. Even thought he was aiming away from the front / straight ahead position.
They appear to be attached to the turret not the hull of the M4 tank.
This might be another bug, If not.
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Then why are they firing straight ahead?