When marine Bobby Danzig first speaks to Jeannie, he is wearing the insignia of a private first class (one chevron), but is wearing a red "blood stripe" on his dress blue trousers; this stripe is designated for non-commissioned officers, which a PFC is not (the Private First Class should be wearing plain blue trousers). However, the end credits identify Danzig as a corporal - two ranks higher than a PFC, and authorized to wear the stripe.
In the first minutes of the movie, the character Jack comes out of the shower and sits in a chair with only a towel wrapped around him. As he sits, it is revealed that he is, in fact, naked under the towel which is easily viewed.
When the service men are boarding the bus, and Kay is saying goodbye to her husband, a man appears with a megaphone to announce the bus is departing. His megaphone is a self-contained transistor one which was not available in 1941.
The factory continues to produce SBDs with a red circle within the white star many months after it had been officially eliminated (May 1942) due to possible recognition problems with Japanese planes and the "Rising Sun" insignia on their planes.
The opening shots of the southern California coast near Santa Monica show the postwar amusement park Pacific Ocean Park (or "P.O.P.")
During a dinner with Lucky & Kay, Lucky puts an LP on the phonograph. LP's became popular in the early 1950's.
When he comes home, Jack is wearing the ribbon for the American Defense Service Medal, which is incorrect because he enlisted after Pearl Harbor, and that medal is for those on active duty From September 8, 1939 and December 7, 1941.