Combat 18 (C18) is a neo-Nazi organisation and hate group associated with the Blood and Honour organisation, based on the principles of "leaderless resistance". It originated in the United Kingdom but has since spread to other countries. Members of Combat 18 have been suspected in numerous deaths of immigrants, non-whites, and other C18 members. The 18 in its name is derived from the initials of Adolf Hitler: A and H are the first and eighth letters of the Latin alphabet.