OK, how's this. He was asleep in his tent, got that?
He climbed OUT of his uniform before going to sleep, got that?
He was in his "skivvies" while asleep, mmmmk?
When the **** hit the fan, he thought it wiser to fight than be in proper battle dress
(he should be gigged for wearing flip-flops instead of his boots, right?)
Hope this clears up the confusion Dr. Watson