Vader

Vader is a thrashy Death Metal outfit from Poland. Originally formed behind the Iron Curtain, Vader started out with a fairly unique sound owing to the lack of outside influence. Vader's main focus, musically, is to convey the concept of War, although there are some fantasy concepts involved. With a style that is frantic and sometimes seemingly senseless, I think they succeeded.
*Personal Meditations: Another favorite of mine. However, the music sometimes loses its meaning amid the brutality. I would not recommend listening to Vader exclusively for long periods of time, as it is easy to get burnt out on them.*

The Ultimate Incantation (1993)
Litany (2000)
The Art Of War [EP] (2005)
Impressions In Blood (2006)