 The group released its debut album "Tactical" in July 2011, which featured contributions from guitarist James Murphy.Following the release of the album, Eryavac and Yeung left World Under Blood, to be replaced by current bassist and drummer Kyle Konkiel and Mike Heller, respectively.However, since 2012 the band has remained largely inactive, due in part to Miller's return to focus on his other bands, CKY and Foreign Objects, as well as the busy schedules of other band members.