Confederate States Marine Corps
From Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Confederate_States_Marine_Corps#Rank_Insignia

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Researching Confederate Marines in the Civil War
Winter 2001, Vol. 33, No. 4 | Genealogy Notes By Trevor K. Plante

https://www.archives.gov/publications/prologue/2001/winter/confederate-marines-in-the-civil-war.html