Considered to be Joy Division's earlier days, Warsaw involved Joy Divison members Ian Curtis (vocals), Peter Hook (bass/backing vocals), Bernard Sumner (guitar/backing vocals) and Steve Brotherdale (drums). Initially, they called themselves The Stiff Kittens with Sumner (guitar), Hook (vocals/bass) and Tony Tabac (drums) before Curtis joined as vocalist/lyricist along with a new drummer, Terry Mason, in late '76.
Defiantly more punk influenced and heavier, the band recorded a 5 track demo in July 1977 which remained unheard until 1994 when a semi-official bootleg CD was released. Following the dismissal of drummer Brotherdale shortly after the demo recording, Stephen Morris joined as drummer, thus forming the final band line-up.
Following Morris' appointment the band's sound changed dramatically and in late '77 they changed their name to Joy Division, debuting under their new moniker in January 1978.