When Johnny Comes Marching Home is a 1942 musical film directed by Charles Lamont and starring Allan Jones and Jane Frazee.

Johnny Kovacs (Jones) is a war hero who comes back home for a ten-day leave.

Pursued by a woman (Shelton) who considers herself his fiance, he works with his superior officers to hide during his leave.

He becomes friends with some other boarders (including O'Connor, Ryan and Gloria Jean) and falls in love with a woman (Frazee).

The closing song in the picture is a rousing patriotic number sung directly to the audience by the main players in the film.