Is this video some sort of joke, or maybe it is Russian misinformation propaganda.
https://www.youtube.com/watch?v=LGyPl9vJMcsThe camouflage stuff is the wrong colour and pattern. They are training to fight in freezing conditions, and the puddles don't contain any ice. They don't have proper clothing either, and they can't start and maintain cooking fires. I reckon I know more that they do, and I haven't had any training. At least I know that in sub-zero temperatures, you have to be able to resist the need to pee, as peeing reduces the core body temperature. I bet all that is second nature to the Russian soldiers.
Why aren't they training in Alaska anyway? Iceland, despite its name, must be a doddle with all the hot springs there.