This Is the Army (1943)

"In WW I dancer Jerry Jones stages an all-soldier show on Broadway, called Yip Yip Yaphank. Wounded in the War, he becomes a producer. In WW II his son Johnny Jones, who was before his fathers assistant, gets the order to stage a knew all-soldier show, called THIS IS THE ARMY. But in his pesonal life he has problems, because he refuses to marry his fiancée until the war is over." -imdb.com