The color(s) red, white, brown, black, and blue is/are claimed as a feature of the mark.
"MARINES" AND "GUADALCANAL"
The mark consists of a bull, in brown and white, with blue and white and yellow steam and lightning coming out of its nostrils. Next to the bull design 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 "1"s, in red and bordered in black white, within one number "1" is the term "MARINES" and in the other the name "GUADALCANAL", in white. Atop and beneath the bull and diamond white circular designs 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", all of the wordings in the banners are in brown.
THREE D BATTALION FIRST MARINES MARINES GUADALCANAL THUNDERING THIRD; THREE DIMENSIONAL BATTALION FIRST MARINES MARINES GUADALCANAL THUNDERING THIRD;