Have you been exposed to trauma in near or freezing conditions? Are there institutional courses or classes available that discuss this topic?

I would suggest you look at mountaineering medicine and wilderness medicine sources for answers. My take is that the ability to maintain body temperature is the biggest concern, so if you have a wound that has profound blood loss, you are trying to deal with shock and maintain a non hypothermic body temperature, which would be difficult if rapid evacuation is unavailable. I taught Swiftwater Rescue for about a decade and have had to deal with hypothermia alone on rivers on a number of occasions where there were not any additional conditions involved. If the condition gets beyond the "umbles" stage, evacuation is required to a definitive care facility. Google "Medicine for Mountaineering" as a good place to start. Here are a number of Wilderness Medical Schools in the nation, from NOLS to WMI. They can be a good source too.

I spent 4+ years at Fort Drum. I would definitely classify those winters as traumatic.

Avoiding hypothermia and the ability to evac are the 2 issues. We know how to treat our wounded, but cold weather is just a plain old--KILLER. So make sure you know how to get the individual warm. and keep them warm-FAST. (And yes, this is where you may have to do the two in one bag thing) So, your basic jobs are to perform first aide and to keep them warm till they are evacuated.

Now keeping your soldiers in good physical shape is biggest thing you can do to help them survive being wounded in extreme cold. There is a host of PREVENTATIVE things that go along with this and everyone of them is absolutely important, and if not strictly enforced, will hugely retard a individual's ability to resist trauma in cold weather operations. Oh, I usually count frost-bite as stupidity and NCO negligence; unless you accidently fell into water.

Here are a few of them, and trust me, they are just little common sense things and orders of discipline. Clean and dry clothes, enough hot food to eat as you need additional calories to survive in cold weather, buddy system, hygiene, enough decent sleep, the discipline to follow winter SOPs, and good moral. I will only give you one example and you will see how something small becomes something big; frozen clothes don't keep you warm and have you ever tried to get them off?? Nuff said.

I used to be in the 205th Artic Light and I'm coined. The book Frozen Hell by William R. Trotter is excellent. An Oldie but Goodie that I have is the US Army's Pamphlet No. 20-271 by Earl Ziemke, on German Northern Operations from WWII; printed June 1959. While at a higher level, it covers a lot of issues of large scale northern operations and you can see how it filters down to the individual unit. This is really a old but excellent read. Oh, and it's actually a hard cover book and not a paper pamphlet.