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