Factual error: On the map behind the colonel during the first scene, Iceland is labelled as being under Nazi control. This is incorrect, as the British were in control of the country during the whole of the war. (00:05:10)
Continuity mistake: When we see the guy trying to open the coconut with his bayonet, his blade is either on top of the coconut or digging into the coconut depending on the shot. (00:21:20)
Revealing mistake: Near the end of the battle at the end of the episode, we see some Japanese troops coming out from the jungle. The Marines then shoot a machine gun, killing them. But pay attention to the ammo belt. All the bullets are blanks. (00:38:50)