The number 18 is a White Supremacist alphanumeric code for Adolf Hitler, derived from the Latin alphabet (1 = A and 8 = H). It may also appear in forms such as Combat 18 or C18. It is most commonly encountered in Britain.
It is most closely associated with the British White Supremacist group Combat 18, or C18. Groups affiliated with Combat 18 have occasionally appeared in the United States as well, but they have generally been short-lived and frequently dissolved.
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