(at around 1h 34 mins) Maggie Putnam (Debbie Reynolds) says she didn't want to be an Army wife. She is not an Army wife, but she is an Air Force wife. (The two services were separated in 1947.) However, it was established earlier that Maggie was not knowledgeable of of service branches or ranks.
Joe's uniform has 2 Good Conduct Ribbons, when only one at a time is authorized; also, neither is in the correct order of prescience.