The WWII vets, Bastogne, et al, know that all too well. None I am aware of refused to fight at Bastogne because of too few bullets, or no shoes against overwhelming odds.
Yes. I've been to Bastogne in the winter. I froze my buns off though I was warmly dressed, dry, well fed and noone was shooting at me. In fact, the people of Bastogne were most courteous. They can pick Americans out of a crowd.