The motorcycle engaged in the chase at the Utah story climax runs out of gas and is allowed to go over a cliff, yet when it crashes on the rocks below, there is a large fuel explosion.
The opening scene takes place on the tropical island of Leyte, The Philippines, yet the frosty breath of the actors is clearly visible.
Douglas MacArthur was in the Philippines on December 6 and 7, 1941. For Jeffrey and Bogg to correct history, they would have had to prevent him from traveling to Hawaii in the first place, not just save him from dying in the attack on Pearl Harbor.
An Army NCO says they'll lock someone up in the brig, but they're on an Army base. Brig is a term used by the Navy and Marines, while the correct Army term would be stockade.