Lawrence of Arabia.
Kelly's Heroes. (What's with all these negative vibes man?)
The Deer hunter. (Oh yes!)
Predator. (You lose it here you're in a world of hurt..)
Carry on up the Khyber.
Ice cold in Alex' (Everybody forgot that one - brilliant.)
Henry V (the 1944 film with Laurence Olivier.)
If you include Naval and Airforce:
Master and Commander
The Cruel sea
Battle of Britain,
Reach for the skies