Knowledge about military technology of the Viking Age (end of 8th- to mid-11th-century Europe) is based on relatively sparse archaeological finds, pictorial representation, and to some extent on the accounts in the Norse sagas and laws recorded in the 13th century.
According to custom, all free Norse men were required to own weapons, as well as permitted to carry them at all times. Indeed, the Hávamál, purported to be sage advice given by Odin, states "Don't leave your weapons lying about behind your back in a field; you never know when you may need all of sudden your spear."
As war was the most prestigious activity in Viking Age Scandinavia, beautifully finished weapons were an important way for a warrior to display his wealth and status. A wealthy Viking would likely have a complete ensemble of a spear, a wooden shield, and a sword. The very richest might have a helmet, other armour is thought to have been limited to the nobility and their professional warriors. The average farmer was likely limited to a spear, shield, and perhaps a common axe or a large knife or seax. Some would also bring their hunting bows (mostly long bow or flat bow) to use in the opening stages of battle.
The bow and arrow was used both for hunting and in battle. They were made from yew, ash or elm. The draw force of a 10th-century bow may have reached some 90 pounds force (400 N) or more, resulting in an effective range of at least 200 m depending on the weight of the arrow. A yew bow found at Viking Hedeby, which probably was a full-fledged war bow, had a draw force of well over 100 pounds. Replica bows using the original dimensions have been measured to between 100 and 130 pounds draw weight. A unit of length used in the Viking age called a bow shot corresponded to what was later measured as 227.5 m, or 800 feet. Illustrations from the time show bows being pulled back to the chest, rather than to the corner of the mouth or under the chin, as is common today.
Arrowheads were typically made from iron and produced in various shapes and dimensions, according to place of origin. Most arrowheads were fixed onto the arrow shaft by a shouldered tang that was fitted into the end of a shaft of wood. Some heads were also made of wood, bone or antler. Evidence for eagle feather flights has been found with the feathers being bound and glued on. The end of the shaft was flared with shallow self nocks, although some arrows possessed bronze cast nocks. The historical record also indicates that Vikings may have used barbed arrows, but the archaeological evidence for such technology is limited.