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Navy Uniforms, Uniform Insignia, Caps and Accessories circa 1917 
Admiral of the Navy in Special Full Dress Uniform Rear Admiral in Special Full Dress and Warrant Gunner in Special Full Dress  
       
Lieutenants in Evening Full Dress and Evening Dress Lieutenant in Dress Uniform
       
Lieutenant in White Mess Dress Uniform Lieutenants in overcoat and Boat Cloak  
       
Lieutenant in Undress Uniform Lieutenant Junior Grade in Service Dress Uniform
       
Lieutenant Junior Grade in White Service Dress Uniform Officer's sword, scabbard, undress belt and sword knot
(all commissioned officers except chaplains)		  
       
 


Cocked Hats, Caps and Cap Device
1 Cocked hat, all officers
2 White cap, Lieutenant Commander and below including chaplains (add visor ornaments for admiral, captain and commander)
3 Cocked hat, the Admiral of the Navy
4 Blue cap, the Admiral of the Navy and all flag officers
5 Blue cap, Captain and Commander
6 Blue cap, flag officers, staff corps
7 Blue cap, Captain and Commander, staff corps other than chaplain
8 Blue cap, Captain and Commander, Chaplain Corps
9 Blue cap, Lieutenant Commander and below including chaplains
10 Blue cap, warrant officers, cap device gold fouled anchors
11 Cap device, all officers other than warrant officer
       
 







Officer Epaulets
1 Rear Admiral (two stars)
2 Commander (silver oak leaf)
3 Ensign (fouled anchor)
       
Officer sleeve insignia of rank   Officer metal devices
1 Line
2 Medical
3 Pay
4 Chaplain
5  Professor of Mathematics
6 Constructor
7 Civil Engineer
7.5 Dental
8 Boatswain
9 Gunner
10 Machinist
11 Carpenter
12 Sailmaker
13 Pharmacist
14 Mate		  
       
 

Officer collar devices on service coat
-Showing right side of collar
1 Admiral of the Navy
2 Admiral
3Vice Admiral
4 Rear Admiral
5 Captain, Line
6 Captain, Medical 
7 Captain, Pay
8 Commander, Chaplain
9 Commander, Professor of Mathematics
10 Commander, Constructor
11 Commander, Civil Engineer
12 Lieutenant, Dental 
       
Chief Warrant and Warrant Officer collar devices on service coat
-Showing right side of collar
1 Chief Boatswain
2 Chief Gunner
3 Chief Machinist
4 Chief Carpenter
5 Chief Sailmaker
6 Chief Pharmacist
7 Chief Pay Clerk
8 Mates

   Enlisted rating badges blue uniform
1 Chief Master-at-Arms
2 Boatswain's Mate, First Class
3 Gunner's Mate Second Class
4 Quartermaster
Third Class 		  
       
Chief Petty Officer in White Uniform
-One service stripe (Over four years service)
-Non Seaman branch (Rating badge on left arm) 		   Chief Petty Officer in Blue Dress uniform
-Two service stripes (Over eight years service)
-Seaman branch (Rating badge on right arm)
-Square knot below rating badge (former apprentice)


Boatswain's Mate First Class in Dress Blue uniform
-Seaman branch (Rating badge on right arm) 		  
       
Seaman and Chief Petty Officer in Overcoat       
       
Seaman in White Dress Uniform    Seaman in White Undress Uniform   
       
Seaman in undress blue uiform with white hat    Seaman in dungaree uniform and in flannel shirt with watch cap  
       








Enlisted specialty marks
1 Master-at-Arms
2 Boatswain's mates, coxswains
3 Quartermasters
4 Blacksmiths, ship fitters
5 Sailmakers' mates
6 Printers
7 Carpenters' mates
8 Turret captains
9 Gunner's mates
10 Storekeepers
11 Yeoman
12 Electricians
13 Machinists' mates, boiler makers, water tenders
14 Hospital Corps (red)
15 Bandmasters, musicians
16 Commissary stewards








Enlisted specialty marks
17 Ship's cooks, bakers
18 Bugler

Distinguishing Marks
(Right sleeve midway from shoulder to elbow)
19 Seaman-gunner
20 Gun-captain
21 Gun pointer
22 Navy E
23 Expert rifleman
24 Radio operator
25 Torpedoman
26 Ex-apprentice
       
Reference: Uniform Regulations United States Navy, 1913 (Revised to January 15, 1917), Washington DC, Government Printing Office, 1917