Continuity mistake: At the end of the movie when the blind flower girl (Virginia Cherrill),sees her tramp benefactor for the first time Chaplin's hand jumps back and forth away from his mouth in sucessive shots.
Continuity mistake: In a close-up of a photo of "Jeannie-Weannie" being held by the one of the new recruits, his left hand is holding the photo at the bottom, but when we cut to the recruit in the next shot, his left hand is now holding the photo in the middle.
Continuity mistake: The second-story room of the prison warden's daughter is on fire and she is screaming for help. Stan has trouble connecting a fire hose to a water valve and Ollie winds up completely drenched, but in all the following scenes where Ollie is using a ladder to try to rescue the woman, his clothes are dry.
Continuity mistake: When Bosko is sitting in the trench, he spots a piece of cheese on a mousetrap and eats it. In the next shot, the mousetrap has disappeared.
Other mistake: A crewman tells the ship's captain he knows there are four stowaways because he heard them singing "Sweet Adeline," a popular barbershop quartet song. Harpo never spoke in any of the Marx Brothers films. The crewman could not have heard four voices.
Continuity mistake: When Stan and Oliver are speaking to the ice-cream salesman, the amount on the till reads "05", but after Oliver has given him the money to pay for the ice-cream, the amount is now "10."