Twelve O'clock High
(20th C. Fox, 1949)
Masterpiece production about a B-17 group in England early in WWII. Gregory Peck as the study in command, and Dean Jagger in a role that got him a Best Supporting Oscar. Not just a cracking good war story, this movie is consistently used in management classes to illustrate to the managerially tone-deaf how to motivate different types of people.