Continuity mistake: In the end of the movie, Hilts (Steve McQueen) is returned to the camp - he is dirty and his shirt is torn. When he enters the cooler, after being tossed his baseball glove, he is clean and his shirt is no longer torn. (02:49:50)
Other mistake: After there has been the vote for chief, behind one boy you can see a piece of wood reading "Anthony M," a marker for showing where the actor (Anthony McCall-Judson) should sit. (00:13:25)
Continuity mistake: When JB is driving the truck and is being bombed with grenades from the helicopter, the truck gets smoke blackened. But when he arrives at the speedboat, all the smoke marks have gone.
Continuity mistake: When Ector and Kay fight, the mallet behind turns 180ยบ. (00:49:30)
Revealing mistake: After a carriage rolls over Midshipman Poop-Decker's sword, he can be seen pushing some kind of trigger with his thumb to make the sword split in two. (00:05:05)
Continuity mistake: Whilst discussing how to split the money, after Finch says "Please don't argue anymore, you're hurting everybody's feelings", Benjy says "Look" and raises his hands upwards. In the next shot, he is suddenly pointing with a finger on his right hand, something he was not doing in the previous shot. (00:30:23)
Revealing mistake: When the arrow hits Medea and Jason pulls it away from her back, she crouches and the prop pad where it was stuck protrudes.