This Is the Army - Michael Curtiz

In WWI dancer Jerry Jones stages an all-soldier show on Broadway, called Yip Yip Yaphank. Wounded in the war, he becomes a producer. In WWII his son Johnny Jones, who was before his father's assistant, gets the order to stage a new all-soldier show, called This is the Army. But in his personal life he has problems, because he refuses to marry his fiancée until the war is over.