Individual Viking warriors known during the eighth through eleventh centuries for their ferocity.
A sixth-century bronze matrix depicting berserkers. Berserkers were associated with shape changing or the wearing of animal skins, such as the wolf costume shown here.
The berserkers were the semi-mythological Viking warriors who foamed at the mouth and fought with a strength and frenzy that made their foes tremble with fear. It is the berserker that has given us the popular image of the Viking warriors. Some, however, dispute that they even existed. Still, stories about berserkers litter the Icelandic sagas, where they are both venerated as the most powerful of all Viking warriors, and also despised as ugly, unreasonable psychopaths.
The word “berserker” may stem from “bare of shirt”, for going into battle without armour, or “bear-shirt” because of the animal skins that they wore. In the sagas, berserkers were also often associated with shape changing, and could take the form of a bear or wolf, or at the very least assume the qualities of these beasts before they went into combat. In Haraldskvæði, a skaldic poem about Harald Finehair, his berserkers are called “wolf-skins” and in battle they “bear bloody shields and red with blood are their spears when they come to fight.”
Berserkers are often recorded as being immune to injury or having “weapons glance off them”. It is unclear if this is to do with the animal skins they may have worn or a greater tolerance to pain achieved by entering into a frenzied state. This state is often described as a fit of madness, a fury known as “berserkergang”.
Berserkergang seized men with a chill that caused shivering, chattering of the teeth, a hotheadedness and a red swelling of the face. The berserkers then entered a great state of rage, where they howled like animals, bit the edges of their shields and attacked anything that moved. A berserkergang warrior was scared of nothing and would cut down anyone who stepped in his way – friend, family or foe.
An incident where a berserker fails to recognize his family is told in Egil’s Saga. In the story, Egil’s father Skallagrim is taken by a berserkergang – called a “shape-strength” – as he played a ball game with his son and another boy, Thord:
“Thord and Egil were set against Skallagrim in the game; and he became weary before them, so that they had the best of it. But in the evening after sunset it began to go worse with Egil and his partner. Skallagrim then became so strong and he caught up Thord and dashed him down so violently that every bone was broken and he died. Then he seized Egil. Now there was a handmaid of Skallagrim’s named Thorgerdr Brak, who had nursed Egil when a child; she was a big woman, strong as a man, and of magic cunning. Said Brak: ‘Dost thou turn thy shape-strength, Skallagrim, against thy son?’ Whereat Skallagrim let Egil loose, but clutched at her. She broke away and took to her heels with Skallagrim after her. So went they to the utmost point of Digraness. Then she leapt out from the rock into the water. Skallagrim hurled after her a great stone, which struck her between the shoulders, and she never came up again.”
– Egil’s Saga, translated by W.C. Green
According to Hrólf’s Saga, the great strength and immunity from pain experienced by the berserker was immediately followed by a depleted state, where the warrior was “so powerless that they did not have half of their strength, and were as feeble as if they had just come out of bed from a sickness. This lasted for about a day.” One way of killing a berserker, according to the sagas, was to wait until his fury had left and then attack him in the enfeebled state that followed. In the sagas, berserkergang was a condition that could seize men without warning. At other times it came over a warrior just before combat. There are many theories about how warriors harnessed the power of a berserkergang. Alcohol, hallucinogenic mushrooms or self-induced hysteria have all been suggested. It has also been hypothesized that warriors underwent a ritual, which included a sacrifice to Odin and the drinking of wolf or bear blood.
It is known that Harald Finehair used berserkers as shock troops within his army, and other Viking kings employed them as personal bodyguards. It may be that these elite warriors were able to induce berserkergang at the required moment through ritualistic means. Reports of berserkers in battle variously describe them as fighting naked, or dyed in blue or covered in bear or wolf-fur – the latter was known as ulfheðnar, or “men clad in wolf skins”. However valuable berserkers were within the theatre of conflict, outside of it they were often described as a blight on society. The Viking warrior code demanded loyalty and fidelity to one’s leader and comrades; berserkers, on the other hand, were known to turn indiscriminately on their friends and loved ones.
Outside of their role on the battlefield, the sagas often record berserkers as brutish murderers and sex offenders who lived outside the rules of Viking society. They are described as looking like trolls, with “black eyes and eyebrows joined up in the middle”, and being “more like monsters than men.” It is perhaps no wonder that as Viking Scandinavia converted to Christianity, berserkergang became unacceptable. In 1015, Erik Bloodaxe banned berserkers and made the practice of berserkergang punishable by outlawry. Later, the duels known as holmgang were also prohibited. This prevented berserkers challenging a warrior to a duel so he could take his property and women. The Icelandic Egil’s Saga records such an incident:
“Gyda went to Egil and said: ‘I will tell you, Egil, how things stand here with us. There is a man named Ljot the Pale. He is a Berserk and a duellist; he is hated. He came here and asked my daughter to wife; but we answered at once, refusing the match. Whereupon he challenged my son Fridgeir to wager of battle; and he has to go tomorrow to this combat on the island called Vors. Now I wished, Egil, that you should go to the combat with Fridgeir’ … On the morrow Fridgeir made ready to go, and many with him, Egil being one of the party. It was now good travelling weather.
They soon came to the island… Soon came thither Ljot and his party. Then he made him ready for the combat. He had shield and sword. Ljot was a man of vast size and strong. And as he came forward on the field to the ground of combat, a fit of Berserk fury seized him; he began to bellow hideously, and bit his shield… Ljot sprang swiftly to his feet. Egil bounded at him and dealt at once a blow at him. He pressed him so close that he was driven back, and the shield shifted from before him. Then smote Egil at Ljot, and the blow came on him above the knee, taking off his leg. Ljot then fell and soon expired. Then Egil went to where Fridgeir and his party stood. He was heartily thanked for this work.”
– Egil’s Saga, translated by W.C. Green
There are few recorded accounts of berserkers from the mid-eleventh century onwards. Like all pagan traditions such as spell casting and shape changing, berserkergang was considered a dangerous heathen practice that had no place in Christian society. Berserkers, alongside the god Odin they were dedicated to, disappeared from view.