- last post: 01.01.0001 12:00 AM PDT
First of all, he's called master chief because his rank is "Master Chief Petty Officer" (i know, kind of an oxymoron huh?) which is a REAL Navy rank equavilant to a Major in the Marines. Yes, he and the rest of the spartans are "swabbies" (slang for someone in the Navy). It's also obvious because in Fall Of Reach, there is a point in which he is wearing a white dress uniform. Only the Navy dress uniform is white. The Marines' is a light brown (the Marines also have a Ceremonional dress uniform which is dark blue).