Energized fabrics could keep soldiers warm and battle-ready in frigid climates. Soldiering in arctic conditions is tough. Protective clothing can be heavy and can cause overheating and sweating, while hands and feet can grow numb. To keep military personnel more comfortable, scientists are trying to create high-tech fabrics that heat up when powered and that capture sweat. These fabrics could conceivably be used in future consumer clothing. Source 3f.
Arctic conditions are some of the harshest to be a soldier in. You have to wear layer over layer and big heavy boots. They are called mickey mouse boots because they look like his big boots. You fill them with air to keep you up off the ground. They are heavy too. Then, when you start moving you start to sweat, which of course could kill you in an arctic environment if you stop moving and start freezing. So something like this would be a huge breakthrough.
There is already a line of clothing available to consumers that will keep you warm on cooler nights and even in winter. I do not see why that can not be used for military wear. I have found that all I needed was three layers of clothing and I did not have much issues with the cold. I am one that can teach people how to wear stuff in proper layers so they are not excerting themselves just to move about under a lot of bulky clothing.