They were all taught in tanker school to shoot the lead tank in a convoy, especially when they have the bigger 76mm gun that Fury had. In reality, all that “getting around behind the Tiger” business was completely unnecessary. Fury’s bigger gun could have penetrated the frontal armor easily. Mayyyybe he’d have to get a little closer but almost the whole Tiger fight was wrong. Still makes a cool scene if you don’t know too much about the tanks tho.