No but sure that's how it was done. I have slept on the ground in a tent in subzero weather and snow before. Nothing I'd want to do but sure like most things after awhile you get use to it...if that's possible.
Northern Quebec Province... late January into February. -65F. Winter survival training. How do you learn to keep a teammate with extreme cold injury alive? Well, you get a pig delivered to you that you have to keep alive for days...