Bolt Thrower have been around since 1986, and have put out eight studio albums and various other releases. They've been heaviy influenced by Games Workshop, from the band name, to the artwork and lyrices. The CD/DVD combo was released today, and to steal the blurb
"Originally released in 1989, Bolt Thrower's Realm of Chaos immediately took up residency as a death metal/grind masterpiece, mixing an incredibly heavy sound with a war-based theme and image that the band still employ to this day. This re-issue features brand new art drawn by original Games Workshop Warhammer 40,000's Jon Sibbick; the artist who also did the original art for the release back in 1989. The previously unreleased DVD performance is filmed on three cameras and comes from the legendary 1989 ‘Grindcrusher’ tour that also featured the death and grind royalty of Morbid Angel, Napalm Death and Carcass. "
If you want to know more, I recomend heading over to Tears Of Envy to look at a collection of the album covers, and Encycolpedia Metallum, from whence I leave you this quote, about The IVth Crusade.
"Where do you go after releasing three awesome albums in a row? Do you stick with what brought you to the forefront and risk being labeled as generic or repetitive? Or do you take an even bigger risk and tweak your sound? Well, this question is pretty irrelevant when the band you're in happens to be Bolt Thrower."