The color(s) red, white, yellow, blue and gray is/are claimed as a feature of the mark.
The mark consists of a circular white design, bordered in blue, in which there is a bull, in red and white, with white and yellow steam and lightning coming out of its nostrils. Also within the field of white is a blue diamond design, bordered in red, within which are five white stars in the shape of the Southern Cross constellation, as well as two number 1s, in red and bordered in white, within one number 1 is the term "MARINES" and in the other the name "GUADALCANAL", in white. Atop and beneath the white circular design are two banners, in white and bordered in blue. In the top banner is found the term "3D BATTALION 1ST MARINES" and in the bottom banner is found "THUNDERING THIRD". A gray outline encloses the entire mark.