We had a big Russian-cap looking thing when I was in 2ID. IIRC we had to wear it for PT (but we have the black watch cap??) but otherwise were not allowed to wear it unless we were in the big brown bear suit, which nobody wore. That was a shame because it sure would have been useful in the motor pool during those cold Korean winters...If I was issued one, I'd wear it just to annoy the CoC. We were issued these but I only ever wore it sleeping because I hated keeping my head in my bivy.
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