I've just discovered this band, they were on my list and from the name thought they were just some type of proto-extreme metal band BUT NO this is a hidden gem of the NWOBHM, can't believe I'd never heard of these guys before. I then read that they were very similiar to Diamond Head and in terms of quality their first album is almost as good as the Diamond Head and Iron Maiden debuts...........I kid you not.
Diamond Head would've been proud of this song.
Holocaust Death Or Glory - YouTube
These guys know how to do Sabbath as well.
Holocaust Mavrock - YouTube