Troopers Three

Eddie Haskins, a wisecracking young man, teams up with two ham-acrobats known as 'Bugs & Sunny', and ,when they are all kicked out of a vaudeville theater in California, they enlist in the U. S. Cavalry. Eddie falls in love with Dorothy Clark, the daughter of a sergeant and, following a moonlight tryst, they are discovered by Sergeant Hank Darby who himself is in love with Dorothy. They have a fist-fight in which Eddie comes out second best. (imdb)