That means you should be pulling your rucks, rifles, pistols, and all survival gear out and modifying your loads to meet your requirements in your local area.
That also means it’s time to ‘winterize’ your rifle/pistol. A good place to start is to clean it thoroughly, then, when reassembling, ensure you have all parts almost ‘dry’ (meaning the slightest amount of lubricating material (don’t have the room to list them all here) on all surfaces that are going to move during the cycle of operation. Confirming zero with some heavy clothing on might be a good idea also.
Change out that summer ‘patrol bag’ to your winter combination. Those nice, thin socks need to be changed out as well as your boots. Uninsulated is not the way to go in winter, even in some of the warmer climates in the country. At bear bones minimum, 200 grams of thinsulate in your boots will see you through.
Clothing that’s super thin or designed for hot weather should be changed out, too.
Yes, changing all the summer items out means your ruck weight will increase a bit, but if you’ve been doing your ruck walks, it won’t be enough to be a show stopper should you need to move to another place on foot.
Get a couple of new packs of 12+ hour hand warmers (air activated) and put them in your ruck. These make a world of difference with lighter sleeping bags, and when doing work with bare hands in extremely cold/wet weather.
If you haven’t done this is in awhile, you may want to practice making a fire without any accelerants. That means using only natural tinder and your ferro rod and steel.
If you’re in snow country, check your snow shoes and sleds. It’s still warm enough to wax the sled (and if you do winter training, you’ll be glad you did when you’re pulling a full sled in deep snow).
All in all…check your equipment, switch out what you think you need to do, don’t over pack, either. Remember, it’s about what you need vs. what you want.