When Willie Comes Marching Home is a 1950 World War II comedy film directed by John Ford and starring Dan Dailey and Corinne Calvet.

William "Bill" Kluggs is the first in his hometown of Punxatawney, West Virginia, to enlist in the Army Air Forces after the attack on Pearl Harbor, making his father Herman, mother Gertrude and girlfriend Marge Fettles proud.

Willie tries to become a pilot but washes out, although he proves to be so proficient at aerial gunnery that, rather than being sent to Europe to fight, he is made an instructor and assigned to a base near his hometown.

He finally gets his chance when a gunner on a B-17 Flying Fortress bomber gets sick and Bill is allowed to take his place.

There, he passes the vital information and his eyewitness confirmation on to a series of important generals, first in London and then in Washington, D.C. All this time, he is not allowed to sleep and plied with liquor as a pick-me-up or to settle motion sickness.