Dropped a self-propelled gun

A soldier in a green uniform stands on the back of a flatbed truck as a tank mounted on the truck's bed suddenly lurches backward, its rear wheels lifting off the deck and its turret swinging violently to the left, sending a plume of dark smoke and dust into the air; the soldier remains standing, watching the tank's rear end rise and then fall back down onto the truck bed as the vehicle continues to emit smoke.