The SteelMaster of Indwallin: Epic Fantasy of Magic, Witches and Demon Halfmen

Morgin finds himself living two lives. When he goes to sleep at night he dreams of a life twelve hundred years in the past. But it's not like a dream, it's more like another life, for when he goes to sleep in that other life, he awakes again in this one, still a hunted man. In the far past he's a mercenary Benesh'ere warrior hired out to one of the twelve Legions of Angels fighting in the Great Clan Wars. And there he fights alongside, and against, legendary figures from the far past of the Shahot. He gets to see firsthand the truth of the Wars, and the truth of, or rather the lies behind, the legends that every clansman has heard of since childhood. And the Benesh'ere warrior has his own memories of a peaceful childhood disrupted by the Wars, and centuries spent at the forges shaping the steel for a legendary blade, a blade without flaw, a self-forged blade. Beware the power of the self-forged blade.