Here are a few good ones...
Bataan April 4, 1944 Stars: Robert Taylor, George Murphy, Lloyd Nolan Director: Tay Garnett
The Story of Dr. Wassell July 4, 1944 Stars: Gary Cooper, Laraine Day, Signe Hasso Director: Cecil B. DeMille
Command Decision February 1949 Stars: Clark Gable, Walter Pidgeon, Van Johnson Director: Sam Wood
Captain Newman, M.D. December 25, 1963 Stars: Gregory Peck, Tony Curtis, Angie Dickinson Director: David Miller
For complete casts go to the links.
Note: Command Decision came out a year before Twelve O'Clock High.
University of Science Music and Culture (USMC) class of 71 and 72 ~ Extraneous (AKA Mziln)