War of the Isle

The War of the Isle was ostensibly fought between the Maomer of Pyandonea and the Altmer of the Summerset Isles, from which the name of the War originates.  The battle itself occurred in 3E 110 , and "very nearly wiped out the Altmer" . They had to call in supposed from the Psijic Order  and the Empire in order to defeat the threat. 