The number 318 is a white supremacist numeric symbol. The 3 in the symbol is a numeric substitution for the letter C, thus making the symbol C18 or C-18. This in itself is code for a British white supremacist group, Combat 18, that occasionally has a presence in the United States. The 18 in its name is another numeric substitution symbol standing for Adolf Hitler. In the United States, 318 is most commonly associated with the Aryan Terror Brigade, a racist skinhead group that claims an affiliation with Combat 18. One variation on this symbol is 8318, which stands for "Hail Combat 18."