Some aspects of U.S. Navy officer uniforms in the First World War marked the end of an era. After the war, the high-collared, braid-trimmed "military" blouse would give way to the international style double-breasted blue service coat, and a new system of insignia would de-emphasize the difference between line and staff corps officers. The insignia on this page were those authorized by the uniform regulations of 1913, revised in 1917. The change of July 1918 concerning chaplains is also illustrated. For the major changes to officer insignia that began in November 1918, please see: U.S. Navy Officer Corps Insignia Changes, 1918-1922.
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Medical Corps and Dental Corps
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![Collar insignia, service dress blue](../../images/co-sm-ra-mc.png) |
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Medical Director with rank of Rear Admiral |
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![Collar insignia, service dress blue](../../images/co-sm-cp-mc.png) |
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Medical Director with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-mc.png) |
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Medical Inspector with rank of Commander
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![Collar insignia, service dress blue](../../images/co-sm-lc-mc.png) |
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Surgeon or Passed Assistant Surgeon with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-mc.png) |
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Passed Assistant Surgeon or Assistant Surgeon with rank of Lieutenant
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![Collar insignia, service dress blue](../../images/co-sm-lt-mres.png) |
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Passed Assistant Surgeon or Assistant Surgeon with rank of Lieutenant (Medical Corps Reserve)
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![Collar insignia, service dress blue](../../images/co-sm-jg-mc.png) |
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Assistant Surgeon with rank of Lieutenant, junior grade
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![Collar insignia, service dress blue](../../images/co-sm-jg-dc.png) |
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Dental Surgeon with rank of Lieutenant, junior grade
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Pay Corps
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![Collar insignia, service dress blue](../../images/co-sm-ra-sc.png) |
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Pay Director with rank of Rear Admiral |
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![Collar insignia, service dress blue](../../images/co-sm-cp-sc.png) |
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Pay Director with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-sc.png) |
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Pay Inspector with rank of Commander
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![Collar insignia, service dress blue](../../images/co-sm-lc-sc.png) |
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Paymaster or Passed Assistant Paymaster with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-sc.png) |
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Passed Assistant Paymaster with rank of Lieutenant
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![Collar insignia, service dress blue](../../images/co-sm-jg-sc.png) |
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Passed Assistant Paymaster or Assistant Paymaster with rank of Lieutenant, junior grade
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![Collar insignia, service dress blue](../../images/co-sm-en-sc.png) |
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Assistant Paymaster with rank of Ensign
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Chaplain Corps
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![Collar insignia, service dress blue](../../images/co-sm-cp-ch.png) |
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Chaplain with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-ch.png) |
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Chaplain with rank of Commander
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![Collar insignia, service dress blue](../../images/co-sm-lc-ch.png) |
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Chaplain with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-ch.png) |
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Chaplain with rank of Lieutenant
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![Collar insignia, service dress blue](../../images/co-sm-jg-ch.png) |
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Chaplain with rank of Lieutenant, junior grade
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The black trim in place of gold was unpopular with many chaplains, and some had appealed to the Secretary of the Navy for chaplains' insignia to be brought into line with that of other officers. On June 26, 1918, Change Number 19 to the uniform regulations was issued, and prescribed gold rank stripes for chaplains. Corps was to be indicated by "lustrous black cloth" between the stripes. Cap ornamentation was also changed to the standard of other staff officers, with gold chin straps and visor trim for higher ranks. The shepherd's crook was also officially authorized for Jewish chaplains.
Authorized June 26, 1918:
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![Collar insignia, service dress blue](../../images/co-sm-cp-ch.png) |
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Chaplain with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-ch.png) |
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Chaplain with rank of Commander
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![Collar insignia, service dress blue](../../images/co-sm-lc-ch.png) |
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Chaplain with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-ch.png) |
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Chaplain with rank of Lieutenant
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![Collar insignia, service dress blue](../../images/co-sm-jg-ch.png) |
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Chaplain with rank of Lieutenant, junior grade
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![Collar insignia, service dress blue](../../images/co-sm-jg-chj.png) |
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Chaplain (Jewish) with rank of Lieutenant, junior grade
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Construction Corps
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![Collar insignia, service dress blue](../../images/co-sm-ra-nc.png) |
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Naval Constructor with rank of Rear Admiral
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![Collar insignia, service dress blue](../../images/co-sm-cp-nc.png) |
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Naval Constructor with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-nc.png) |
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Naval Constructor with rank of Commander
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![Collar insignia, service dress blue](../../images/co-sm-lc-nc.png) |
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Naval Constructor with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-nc.png) |
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Naval Constructor or Assistant Naval Constructor with rank of Lieutenant
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![Collar insignia, service dress blue](../../images/co-sm-jg-nc.png) |
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Assistant Naval Constructor with rank of Lieutenant, junior grade
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Professors of Mathematics
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![Collar insignia, service dress blue](../../images/co-sm-cp-pm.png) |
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Professor of Mathematics with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-pm.png) |
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Professor of Mathematics with rank of Commander
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![Collar insignia, service dress blue](../../images/co-sm-lc-pm.png) |
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Professor of Mathematics with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-pm.png) |
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Professor of Mathematics with rank of Lieutenant
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Civil Engineer Corps
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![Collar insignia, service dress blue](../../images/co-sm-ra-cec.png) |
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Civil Engineer with rank of Rear Admiral
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![Collar insignia, service dress blue](../../images/co-sm-cp-cec.png) |
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Civil Engineer with rank of Captain
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![Collar insignia, service dress blue](../../images/co-sm-cd-cec.png) |
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Civil Engineer with rank of Commander |
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![Collar insignia, service dress blue](../../images/co-sm-lc-cec.png) |
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Civil Engineer with rank of Lieutenant Commander
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![Collar insignia, service dress blue](../../images/co-sm-lt-cec.png) |
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Civil Engineer or Assistant Civil Engineer with rank of Lieutenant
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![Collar insignia, service dress blue](../../images/co-sm-jg-cec.png) |
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Assistant Civil Engineer with rank of Lieutenant, junior grade
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![Collar insignia, service dress blue](../../images/co-sm-en-cec.png) |
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Assistant Civil Engineer with rank of Ensign
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Commissioned Warrant and Warrant Officers
Commissioned Warrant Officers
Commissioned warrant officers wore the commissioned officers cap device and used silver corps devices on the collar and shoulder marks with one exception: Chief pay clerks wore the oak sprig of the pay corps in gold, because the silver corps device on the collar was the insignia for assistant paymasters of ensign rank.
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line
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staff
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Warrant Officers
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line
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staff
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Mates
Mate was a rank which dated from the earliest days of the navy. Mates were enlisted men, senior to all chief petty officers, but wore uniforms identical to those of warrant officers. The last mates were appointed in the 1890s, and there were probably few in the navy by World War I, but their uniforms were still covered in the regulations for many years.