I'd add:
Colonial - "Zulu"
Civil War - "The Good the Bad and the Ugly", and "The Outlaw Josey Wales"
WWII - "12 O'clock High", "Von Ryan's Express", "The Guns of Navarone", 'Das Boot", and "Catch 22"
Vietnam - "Casualties of War"
Cold War - "The Hunt for Red October", and "K7 the Widowmaker" (Directed by Kathryn Bigelow)
Granada - "Heartbreak Ridge"