User blog comment:Kirbycollin1/Empire of the Eldar/@comment-3341288-20111019191047/@comment-3398633-20111019200635

I've already stated the Xai'athi invasion and conquests in Segmentum Tempestus. Other than that perhaps the destruction of the Tau Empire, afterwhich the survivors become a roving fleet of partisans attempting to give their aid where possible. Maybe you could have them save an Eldar-Imperial force during anbattle in which they join the alliance against the Serathi.