This is the Army

This is the Army (1946) starring George Murphy, Joan Leslie, George Tobias, Alan Hale Sr.
The splashy, star-studded This is the Army is based on the Irving Berlin Broadway musical of the same name, which in turn was a reworking of Berlin's WWI ""barracks musical"" Yip Yip Yaphank. In both instances, the cast was largely comprised of genuine servicemen, many of them either recently returned from fighting or on the verge of heading off to war.