A Gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned as follows: Quarterly Azure (Blue) and Vert (Green), between in the first and fourth quarters a radiant sun of twelve points and a mullet Argent, a lightning flash couped bendsinisterwise Gules fimbriated Or.
The colors blue, white, red and green represent four of the original six combat teams of the 5307th Composite Unit (Provisional), commonly referred to as Merrill's Marauders, which were identified by color. To avoid confusion, the other two colors, khaki and orange, were not represented in the design, however, khaki was represented by the color of the uniform worn by US forces in the China-Burma-India Theater during World War II. The unit's close cooperation with the Chinese forces in the China-Burma-India Theater is represented by the sun symbol from the Chinese flag. The white star represents the Star of Burma, the country in which the Marauders campaigned during World War II. The lightning bolt is symbolic of the strike characteristics of the Marauders' behind-the-line activities.
The distinctive unit insignia was originally approved for the 75th Infantry Regiment on 18 March 1969. It was redesignated for the 75th Ranger Regiment on 3 February 1986.