Okay, on arcade mode this mission is easy.
You start Northwest of Stalingrad, clear the phony airfields then head for the waypoint that starts the Stalingrad part of the mission.
The mission objective states something like; "Destroy the vehicles in the
STREETS of Stalingrad".
Look at this map:
http://bl-libg-doghill.ads.iu.edu/gm...d1941-full.gif
Most of the streets in Stalingrad run along the Northwest bank of the river Volga, concentrate your fire in these streets between the warehouses along the river front. Use rockets and highlight targets with the wingman attack icon.
One strafing/bombing run down, turn around, and one up should do the trick.
Then you'll get a mission update telling you to haul-ass Northward up the Volga River, stay under 200 feet, make it to a secret airfield without being detected and land.