Bywar Is A Brazilian Thrash Metal Band Formed In São Paulo In 1997. Discography The Evil's Attack Demo 1998 Invincible War Full-Length 2002 Heretic Signs Full-Length 2003 Violent War Split 2005 Twelve Devil’s Graveyards Full-Length 2007 Thrashing War Split 2008 Booze Brothers Vol. 1 Split 2009