Honestly very cathartic watching the US troops who served in Afghanistan decide to go to Ukraine to fight Russia, then getting caught completely unprepared because, as it turns out, they’re not actually Rambo, they were just fighting untrained civilians who were armed with WW2 era weaponry.
Since WW2, the US conception of war has been the US troops having a massive equipment advantage that passively protects them, to the point that actually taking losses isn’t at all expected. They expect to drive around in bulletproof vehicles, getting shot at as much as they want, and then call in indirect fire on whatever farmer with a hunting rifle decided to take up arms against them. This is why they’re so consistently confused, shocked, and afraid of the fact that Russia has jets and missiles. They’re the ones who are meant to have planes and artillery - they’re completely unprepared for a peer-on-peer conflict (much less being on the losing side).
It’s like the British officers, having served in the Zulu war or, well, even Afghanistan, going off to WW1 and becoming horrified, because they’re no longer just committing uncontested genocides and massacres, but actually fighting with an enemy, and there’s even the possibility that they lose.