 Though inspired by high medieval Arthurian fiction, the historical setting of the poem is during the Post-Roman Migration Period, both in form (using Germanic verse) and in content, showing Arthur as a British warlord fighting the Saxon invasion, while it avoids the high medieval aspects of the Arthurian cycle (such as the Grail, and the courtly setting); the poem begins with a British "counter-invasion" to the Saxon lands ("Arthur eastward in arms purposed").