Mysterious Island (1961)

Factual error: It is barely credible that a young Victorian woman like Elena would even think about wearing a goatskin miniskirt - exposing her legs in those days would be akin to walking about topless nowadays. Even if she did those bright yellow cotton knickers - gleefully visible in the scene in the beehive - are in no way from the 1860s. Her pants are a hundred years ahead of their time.

Visible crew/equipment: When the five men are going up the mountain, a crew member is seen beside a big rock, at the bottom left of the screen. (00:33:50)

Continuity mistake: When the two men are carrying water up to their new cave home (via a home made elevator), one of the men is holding two buckets of water. In the shot where you can see the sea behind them, this man hands the second man a bucket of water, which he takes. In the very next shot, from inside the cave, the first man has both buckets and again hands the other man the bucket of water. (00:48:35)

Elena Fairchild: I'm going to ask Captain Harding to marry us.
Herbert Brown: That'd be wonderful, if he were only a minister, but he's not.
Elena Fairchild: He's a captain, and captains can marry people at sea.
Herbert Brown: He's a land captain, not a sea captain.
Elena Fairchild: Well, we're on land, aren't we?

Gideon Spilitt: Captain, why don't we turn this island into a democracy and elect a leader? One who won't keep escaping to places which need escaping from.
Captain Cyrus Harding: Because all of us here are still at war, and I just happen to be the ranking officer.

Herbert Brown: I ran away from a battle. I've been running ever since. I got caught running away.
Sgt. Pencroft: Son, your whole Union Army's been running from mine for the last three years. Now we're running away from you. You needn't feel special about it.