Soldier in the Rain (1963)

Maxwell Slaughter is a kind, heavyset guy who has reached the rank of master sergeant in the army. Admired by handsome young Sgt. Eustis Clay, Slaughter forms a close bond with his peer. Clay hopes to convince Slaughter to join him in a business venture outside of the service, but, in the meantime, he introduces the older officer to the beautiful young Bobby Jo Pepperdine, inadvertently creating trouble for both men.