The Manchester post-punk band originally formed as Warsaw but changed their name to 'Joy Division' to avoid confusion with the London band Warsaw Pakt. The name 'Joy Division' was taken from the 1955 novel 'The House of Dolls' by Ka-tzetnik 135633. In the book, the 'Joy Division' was a slang term for a group of Jewish women in Nazi concentration camps who were kept as sexual slaves for German soldiers. The band chose the name to reflect the dark, grim themes of their music. After the suicide of lead singer Ian Curtis in 1980, the remaining members reformed as New Order.