The train-berth scene is a reworking of Laurel & Hardy's short subject Berth Marks (1929). Laurel requested that the setting be changed to a turbulent plane, but producer Sol M. Wurtzel refused to accommodate him. At the end of the scene, one can hear the camera crew laughing in the background.
Unlike their earlier work for Hal Roach, and because of the war, the duo decided not to include destructive scenes -like pies in the face, smashing prop, etc. Where it was necessary, they enforced a policy of "one take" to minimizes the destruction.
In a scene where Oliver Hardy accidentally turns on the shower and gets himself wet , the music from the song "Singin' in the Rain" is played. Coincidentally, the song was written for and first performed in The Hollywood Revue of 1929 (1929) in which Laurel & Hardy made a cameo appearance. The song went on to become famous eight years later with the well-known performance by Gene Kelly in Singin' in the Rain (1952).
According to Laurel & Hardy biographer Randy Skretvedt, the film's finale, in which Laurel drops a bomb on a Japanese spy submarine, got cheers from wartime audiences.
Working title was "Good Neighbors."