Continuity mistake: When Rafe's girlfriend is looking for him at the train station there's a train behind her that says "Silver Horizon." But when the camera shows Rafe looking at his girlfriend the words on the train are gone.
Continuity mistake: When Doolittle's raiders are first starting to practice short takeoffs, the flaps of the planes aren't extended in close ups but would have to be for takeoff especially short takeoffs. Planes shown taking off have the flaps extended. In the real takeoff from The Hornet, One pilot retracted his flaps because prop wash from previous planes was lifting his plane. He then forgot about it and took off without flaps extended and was only saved by the heavy wind and forward speed of the carrier. There is actual video of the plane nearly hitting the ocean.
Continuity mistake: When launching Doolittle's plane from the carrier the deck is smooth. When Rafe's plane launches the deck has catapults. The following planes are back to smooth decks with no catapults.