This something very good - I'll put their own explanation up as to what you are seeing:
In The Great Nordic War of 1718, young Norwegian ski troopers used their skills to defend against the attacking Swedish and Finnish soldiers, called 'Karoliners.' These members of the Holtaalian Ski Company were masterful at shooting accurately while skiing at full speed. King Charles XII of Sweden was shot and killed and General Armfeldt called for the Karoliners to retreat immediately. Of the 10,000 men who entered Trøndelag, Norway, only 2,000 made it back to Sweden alive. The Norwegian people did what they do best: accomplish a lot with very little.
This was shot in the historically correct locations in Aunegrenda, Norway.
The musical piece is world-class musician John McLaughlin.
We are now looking to turn this into a feature film. The script is complete and we have support from the Norwegian and Mid-Nordic Film Commissions, as well as the Holtaalian Ski Company, who has access to hundreds of historically correct uniforms, ski equipment, and working black powder rifles from 1718. We are looking for investor and studio backing. Contact Mike at firstname.lastname@example.org. Thank you.
More footage here