Col Harkins (early scene) is wearing his Cavalry Branch insignia upside down. Additionally, he has two ARCOM ribbons displayed where only one would be displayed with an oak leaf cluster.
Early scene where Culpepper says he will shave his legs. Swimmers didn't start shaving legs until Jon Henricks in 1953.
During the film strip scene Glenn uses the term "sack the quarterback" That term was not used until the 60's (attributed to either Deacon Jones or George Allan). He should have used the term "dump the quarterback"