User blog comment:KATANAGOD/Black Ops 2 Logo and Trailer Release Date Leaked/@comment-5017379-20120408191638/@comment-3990940-20120409012856

Big Red One is not an original title. The name was taken from the title given to the American 1st infantry who wore a big red one on their arm. This name has been denoted by a number of historical sources, treyarch just copied it.