Revealing mistake: When there's a cave-in in the tunnel the POWs are building, you can hear, as the POW is tunnelling out of the cave-in, his trowel hitting the glass that separates him from the camera and crew.
Factual error: When the two escapees from the POW camp are in the anchor room of the ship they are on, they leave the harbour and the pilot boat leaves them, but then the chain for the anchor goes out, but they are moving away from the port, why on earth would they be dropping the anchor? If anything they would make sure that all the chain is in the anchor room and the anchor would be on deck.
