The berserkers were Norse warriors who wore the hides of bears into battle and fought with an unrestrained fury (that may or may not have been drug induced) that was said to not abate until every one of their enemies were dead. The berserkers were said to be some powerfully angry that they howled like animals, bit iron in half, and foamed at the mouth.
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The Berserkers were vikings, who would randomly enter a state of senseless, possibly even feral, rage. This proved to be a useful asset in battle, so long as their lack of sense in this state did not get them or worse, their allies, killed. Amongst their own people, it was believed that the spirits of various territorial, lethal or otherwise aggressive animals would come upon them, initiating the 'Berserkergang' that is, the state of being berserk. Such animals included bears and wolves. For other examples of wolves within Norse culture, please look up information on 'Fenrir' Nothin' on bears aside from this.
First, the berserkers were the Vikings unique fighters. They, the berserkers, were used to frighten the enemy which gave the Vikings such a psychological advantage that their fame continues today. So, how were the berserkers used in combat? They were used to fighten the enemy for the Vikings.
berserkers
It is believed that possibly, the Berserkers did.
They were frightening because they looked like wild animals and let out terrifying screams.
They sprayed tan themselves with spray tan and then ate pickles and went GTL