My vote goes for Cross of Iron.
I've never seen this flick on TV. It is available in some video stores in the foreign films section. You'll have to rent it or buy it. But trust me, you'll be entranced.
The film follows a German Army infantry NCO (played by James Coburn) in Russia 1943. His character, Steiner, is a bitter, cynical old soldier with an almost pathalogical hatred of officers (save one, his new platoon leader).
Steiner fights the Russians, his own commanding officer, and his own demons to a bizzare but apppropriate climax.
Director: Sam Peckinpaugh (he directed "The Wild Bunch" which should give you an idea of the action sequences).
Other actors:
Maximilian Schell - played General Bittrich in A Bridge Too Far, and also played Tea Leone's father in Deep Impact. He plays the pompous, self-serving commander of Steiner's company. He is only concerned with his own glory.
James Mason - screen legend, too many films to list. He plays Steiner's Regimental Commander. He tries to keep Steiner out of trouble, but is pushed too far.
David Warner - another screen heavy. He plays the cynical, disolussioned adjutant for James Mason. Warner has some of the best lines of the movie.
Spoilers:
Steiner sends a preteen boy to flush out the Russians before they can assault his platoon.
The scene at the bridge when they encounter the Russian Army females. Hold onto your nuts!
Steiner's platoon is shot up by other Germans, on the orders of his commanding officer.
Real T-34 tanks (the film was shot in Yugoslavia).
The general atmosphere of hopelessness that pervades the Germans.
No holds barred gore. For a 1970's movie they didn't pull any punches.
Get this movie folks, you won't be disappointed.