Seriously, didn't we do underwear at least once? Too lazy to search, but if I remember it was about thermal underwear. I believe Cavalry Store or its offspring have super trooper briefs or whatever. And as for our distaff members, brassiers could probably make a bigger difference than shorts for us guy-types. MAN am I glad I never had to wear a harness for very long at a time (and then with chem warfare gear).