No power metal thread is going to be complete without Manowar being mentioned, the classic Manowar releases were actually their first three albums, of which the debut was like a biker metal album and their third
Hail to England which is really an early 1980s metal classic. After this they steered into a more power metal direction, often with patchy results, but the below album stands as their finest power metal release and an essential listen.
Manowar The Triumph of Steel 1992