In what ways does The History of the Kings of Britain both resemble and differ from ancient epics?

Describing Brutus’ encounter with the Roman goddess Diana, Geoffrey writes, “It seemed to him that the goddess stood before him and spoke these words to him” (52). Why does Geoffrey emphasize Brutus’ uncertainty about whether Diana’s visitation was real or imagined? 

Select a significant battle scene and analyze its narrative structure. Discuss how the narrative serves Geoffrey’s patriotic purpose in The History of the Kings of Britain.