IIRC the troops in Korea were ill equipped for the cold weather———as I recall there was much press coverage about this.I specifically remember something about the boots.
Long time ago so I could be mistaken.
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I think you are right, they had an issue with some boots that were supposed to help them but ended up causing frostbite because they didn’t breathe, but I might be getting that mixed up with the Battle of The Bulge...