... All them fellers've got snow on their roofs!...
I realize you are likely jesting, my friend ... but, just in case you're not, they've actually got "bags on their busbies" ... A fur cap like this (technically an "envelope busby", to distinguish it from the rounder, flat-topped kind) became standard winter headgear for Canadian troops. It was embellished with a cloth bag sewn into the crown (in a distinctive colour depending on the Branch of Service or Regiment ... if Artillery, it would actually be white) and hanging down on the side. I believe the bag may have originated - with the earlier Hussar Busby - as a built-in storage bag (i.e to be turned down over the fur cap when not being worn, to protect it) but by this time had become primarily decorative, and eventually morphed into little more than a cloth 'flap" on the side of the cap -