I remember seeing a WWII movie starting Cary Grant. Grant was portrayed as the captain of an American submarine.
In one scene, the sub was attacked by two Japanese aircraft. This, even though there were no Japanese destroyers present.
To make matters worse, the Americans on the sub responded to the attack by using an aa gun mounted on the sub to shoot down both Japanese aircraft. (The aa gun could be removed and stored inside the sub for when the sub wanted to travel underwater.) Such a scene was far-fetched at best, because subs cannot fire at aircraft.
On a somewhat unrelated matter, I also read a book which claimed the Industrial Revolution began in England. This, clearly, could not have been the case. As everyone knows, it is impossible to construct an industrial complex on an island. Just can’t be done.