Air
Battle of Britain
Angels One Five (maybe not the greatest film in the world but Gregson does play the modest pilot very well)
and so many others...
Land
Too Late the Hero (I know..... but I like it)
A Bridge Too Far
Cross of Iron
Sea
Midway
Sink The Bismarck
Social/Other
Schindlers List
A Canterbury Tale
The Life and Death of Colonel Blimp (I love this film)
Knockabout Fun
Dirty Dozen
Kelly's Heroes
Guns of Naverone
POW
The Great Escape (the greatest film ever made.....probably

)
The Wooden Horse
Very Important Person (absolutely hilarious film with some of my favourite actors.....James Robertson Justice, Leslie Phillips, Stanley Baxter, etc etc etc)