That's not really how it worked though..
The Germans bombed and bombarded Stalingrad before they send in the ground forces to occupy the city. But once the guys were in there, there was no more bombing done, the odds of bombing/strafing your own guys would so high that it was impractical and unthinkable.
The air opperations around Stalingrad did not involve attacks on the city (outside of the single bombing run done prior to the battle, which was SOP for the Germans), it involved both sides trying to cut the other side off from the city, trying to send in cargo by air, trying to prevent the enemy from doing so, and attacking enemy ground troops that were trying to reinforce the city or bring cargo to the city, it all happened around the city, not so much over it, and it most certainly did not involve squad leaders calling in airstrikes.. no, that sort of thing didn't even exist untill the Vietnam Conflict rolled around 20 years later, the tech and consept for it just wasen't there in WWII.
