Fyrd

Anglo Saxon force of fighting men or militia, usually raised from freemen in a village or shire. Used mainly to protect the locality except in times of war where they would be expected to fight anywhere in the country. Organized to great effect by Alfred the Great. To avoid the problem of desertion he rotated the fyrd. 2 months on and 2 months off. This way he could be assured of their loyalty because their land would be tended by their kin who were at home.