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File:Commissioned Officer Rank Structure of the Bulgarian Navy - sleeve insignia.png - Wikimedia Commons
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UNIFORMES ET INSIGNES MILITAIRES 1950 Military uniforms and insignia 50 UNITED STATES NAVY RANK INSIGNIA OFFICERS Sleeve stripes Shoulder straps Cap etc Author and illustrator uncredited No known copyright Archive.org - PICRYL -
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File:Pocket Guide of Uniform Insignia 1943 04 UNITED STATES ARMY Shoulder straps NAVY Sleeve cuff stripes etc "United Nations" rank insignia (Prepared by United States Army) Author uncredited No known copyright Archive.org.jpg -
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