The folks over at America's Funniest Home Videos, like, the actual producers of that show, did a full 10 minutes of funny clips in 2019 from the military that are actually fantastic with everything from funny training accidents, to hilarious pranks, to Joe doing stupid stuff in the barracks or on deployment.
Some of them are common experiences that always have hilarious moments, like when soldiers stumble and fall fantastically while coming out of a rollover trainer. Others are a little more niche, like the foreign soldiers (probably British) conducting an amphibious assault who accidentally jump into waist-deep mud.
But the whole collection really shines when you see the soldiers doing stupid games that you've never tried. For instance, I've never made a wind-powered vehicle out of a poncho liner, some old wheels, and broken office chairs. But I want one. And my personal heroes are now the troops who lifted an entire tent off the ground and moved it so their buddy, asleep on their cot, would inexplicably wake up outside.
The full collection is available above (duh, you know what YouTube embeds look like). It's mostly U.S. service members, but there's a smattering of allies and even some clips that might be from rivals. The videos appear to have accumulated over decades with soldiers in ACUs appearing just moments from grainy shots that look like they're from the '80s.
Skip to 4:34 for the guy who accidentally launches himself onto a fire extinguisher.
But, by far, top recommendation comes at 7:01 when some apparent trainees play a game that appears to be an adult version of quarters. Remember quarters? The bloody knuckles game from school, not the drinking game. The one where each player takes turns making a fist on a table while the other person slides a quarter across the table as fast as they can to try and bloody the first player's fist.
Yeah, these guys play that, but with a shoe instead of a quarter and a crotch instead of a fist. 10/10, would show the clip to trainees and hope it catches on.