Formed in 1985 in New Orleans, Exhorder released two demos before releasing their first full length album, Slaughter in the Vatican, in 1990.
Their thrash based groove sound, taken futher in their second album, The Law, is rumored to have been a great influence on Pantera after their dramatic change from power metal to groove metal, with elements of thrash, which made them sound very much like Exhorder. The Exhorder song 'Ripping Flesh' has the exact same riff as Pantera's 'Cowboys from Hell'.