Entertainment / Literature / Comitatus: (Latin: companionship or 'band'): The term describes the tribal structure of the Anglo-Saxons and other Germanic tribes in which groups of men would swear fealty to a hlaford (lord) in exchange for food, mead, and heriot, the loan of fine armor and weaponry. The men who swore such an oath were called thegns (roughly akin to modern Scottish 'thane'), and they vowed to fight for their lord in battle. It was considered a shameful disaster to outlive one's own lord. The comitatus was the functional military and government unit of early Anglo-Saxon society. The term was first coined by the classical historian Tacitus when he described the Germanic tribes north of Rome.