Continuity mistake: During the trial at the end, Jessup struggles with the MPs to get to Danny Kaffee. After the struggle, his tie is all out of place. In the following close-up shots, it's re-aligned, before becoming completely askew as Jessup goes to retrieve his hat.
A Few Good Men (1992)
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Directed by: Rob Reiner
Starring: Tom Cruise, Kevin Bacon, Kiefer Sutherland, Jack Nicholson, Demi Moore, Kevin Pollak, J.T. Walsh, Christopher Guest, James Marshall
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More mistakes in A Few Good Men
Lt. Daniel Kaffee: My client is a moron. That's not against the law.
Trivia: All of Jack Nicholson's scenes were filmed in only 10 days.
Answer: It's something done to one trooper in a unit who is not pulling his load, to let him know his teammates are tired of him making them look bad. It can range from a beating after lights out to scrubbing a soldier who won't shower with toilet brushes and Comet. (And yes, both of those are from my own military experience, though I wasn't the victim!) It's meant to give a warning and doesn't normally harm anything but the victim's pride. They are strongly against regulations in the past year or two as several soldiers were injured by their unit getting overzealous, just like in the movie.
Grumpy Scot