Korea is a wintry wonderland still. Snow is all over the trees, roads, tents, and it stopped snowing about 2 days ago. To top that all off, it only snowed a few inches.
Now if I were in Jacksonville or most places I have lived in Virginia, the snow would be nearly gone by now, just due to the warm temperatures and efforts of locals to get it out of the roads. Here though, it was 2 degrees Centigrade IN the tent and easily 15 degrees colder outside. People where I am just toss sand down and salt every now and again, but don't seem to plow.
I can't count the number of Marines who have fallen on the ice, most just get a jostling, but some really fall hard.
We didn't do any cold weather training before we left, and really should have. I am not sure why we didn't, but there didn't seem to be much time. Some of these Marines just don't know how to dress in this weather or use the gear (sleeping system, socks, poly-pro, etc) that they have.
When I was a young Lance Corporal, I was trained that there are 3 layers you are supposed to wear out in the elements: a wicking layer, an insulation layer and a protection layer.
The wicking layer is something that takes sweat and moisture away from the body. It needs to be relatively tight/close to the skin and thin. Silk makes a good sock wicking layer.
Insulation layer(s) go between the wicking layer and the protection layer and is designed to be thick and trap lots of air. This layer is important in both cold and hot weather. In hot weather, cooler air can get trapped in this layer, keeping the body cool. Inhabitants of African and Arabic deserts wear several light layers in their extremely hot environments for this reason.
The protection layer is designed to protect the insulation layer and person wearing it from the outside elements. It also allows the insulation to trap the air.
Wearing 2 wicking layers doesn't help and sometimes causes moisture to stay next to the skin. Two protective layers can also keep moisture in. Multiple insulation layers on the other hand are good, as they simply trap air. You have to wear these layers in order or they just don't work.
So in the cold weather, on you feet, you should wear silk or dress socks, under thick socks, under good boots. The sleeping system is designed to have each of the three layers as well, but if you don't put it together right, you have the wrong layers in the wrong order or wear extra layers you defeat the way it was designed.
OK, so there you have it. Those of you planning on going out into the elements, get your layers right first. Those Marines of mine that are out here with me, think about how you are doing what you are doing and do it right!
Semper Fi,
m