The Birkebeiners were a group of Norwegian warriors in the 12th century, known for their role in the civil wars of Norway. They were named after the Birkebeiner mountain, where they fought against rival factions. The Birkebeiners were loyal to the rightful king, Haakon Haakonsson, and played a crucial role in protecting him during his childhood. The Birkebeiners are also famous for their legendary journey in 1206, when they carried the infant Haakon across treacherous mountain terrain to save him from enemies. This event is commemorated annually in the Birkebeinerrennet, a popular ski race in Norway, celebrating their bravery and dedication.