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| Cuff of a Dress Blue Uniform Coat with a Gun Captain's Distinguishing Mark | Illustration from the 1937 U.S.M.C. Regulations |
Like the Navy the United States Marine Corps had a series of marks mostly worn on the sleeves the dress blue and green winter service uniforms to indicate special qualifications. The mark was white on navy blue on the dress blue uniform and red on forest green on the winter service uniform. In addition to the ones appearing in the 1937 regulations a parachuteman mark was worn on the left lower sleeve in a similar fashion during the war. Also in use was a version of the Amphibious Mark in U.S.M.C. colors. This featured an alligator disgorging tanks and was similar in theme to a multicolored shoulder sleeve insignia. These two insignia appear to have been used without official approval. The rifle and pistol marks do not appear in later publications and may have been dropped from use before the later part of the war.
 
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| Amphibious Mark (Courtesy: Lars Kleine) | Parachuteman Mark |
