Final answer:
In Arthurian legend, the Battle of Camlann is often portrayed as King Arthur's last battle due to a combination of prophecy, myth, and the narrative of betrayal and downfall that surrounds his reign, as depicted in literary works like Tennyson's poems.
Step-by-step explanation:
The question revolves around the reasons why Arthur believed that the battle at Camlann could be his final one. The legend of King Arthur encompasses a series of battles and events that lead up to the fateful Battle of Camlann, which is often considered Arthur's last stand. This expectation of Camlann being the site of his last battle is influenced by Arthurian legend, prophetic visions, and the fall of Camelot. In many narratives, the battle is the culmination of a series of betrayals and losses, signaling the end of Arthur's rule. In Tennyson's works and others rooted in the Arthurian tales, there's an air of fatalism and preordained destiny surrounding the characters' actions and the outcomes of their struggles, often echoed in the somber tones and imagery of their stories.