U.S. Marines received training from their British counterparts in how to operate in the extreme cold of the Arctic.
The training took place in Norway near the border with Russia, a region that's relevant based on current events in places like the Ukraine and the state of NATO. Bottom line: Marines need to be ready to fight in this environment.
British Royal Marines hosted the training and included the obligatory inter-coalition harassment like dumping the Yanks into the cold water . . .
... and giving them a shot at building a snow shelter ...
Check out the video below: