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 actually enforced a policy of "one take" to minimizes the destruction.
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, you can hear the camera crew laughing in the background.
In a scene when 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."