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Ranks of the Imperial Japanese Navy

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The Ranks of the Imperial Japanese Navy were the rank insignia of the Imperial Japanese Navy, used from its creation in 1868, until its dissolution in 1945 following the Surrender of Japan in World War II. The ranks were inspired by the ranks of the Royal Navy And also from the former navy of the Tokugawa shogunate.[1]

The officer rank names were used for both the Imperial Japanese Army and Imperial Japanese Navy, the only distinction being the placement of the word Rikugun (army) or Kaigun (navy) before the rank. Thus, for example, a captain in the navy shared the same rank designation as that of a colonel in the army: Taisa (colonel), so the rank of Rikugun Taisa denoted an army colonel, while the rank of Kaigun Taisa denoted a naval captain.[1]

Commissioned officer ranks

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Ranks

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All commissioned officer rank names were the same as their army counterparts. The navy would prefix the common rank names with "navy" (Japanese: 海軍, romanized: Kaigun), while the army would prefix them with "army" (Japanese: 陸軍, romanized: Rikugun). There was a minor difference in pronunciation of character 大 for Navy Lieutenant and Navy Captain. The navy pronounced it as Dai, while the army pronounced it as Tai. However, this pronunciation difference was not officially enacted.

Regular Officers (Japanese: 将校, romanized: Shōkō) were graduates of the Imperial Japanese Naval Academy. Reserve Officers (Japanese: 予備将校, romanized: Yobi-shōkō) were university or college graduates, as opposed to going through the naval academy. Special Duty Officers (Japanese: 特務士官, romanized: Tokumu-shikan) were the officers with the rank of Lieutenant or below, who were promoted from the rank of Warrant Officer (starting from the enlisted ranks).[2][page needed][3][4] Typically the ranks discriminated in a way that the priority of taking command for Special Duty Officers was lower than that of Regular Officers or Reserve Officers.[a] The distinction between Special Duty Officers and Regular/Reserve Officers was also highlighted in the rank insignia (see the table for details).

The rank Commodore was not established but the Captain who was commanding the central ship in the fleet, usually close to being promoted to the rank of Rear Admiral, or acting as the unit commander (which was usually held by a Rear Admiral) nominally became a flag officer by raising the "Commodore Flag".

Rank group General / flag officers Senior officers Junior officers
Title 大元帥海軍大将
Daigensui-kaigun-taishō 		海軍大将
Kaigun-taishō[b] 		海軍中将
Kaigun-chūjō 		海軍少将
Kaigun-shōshō 		海軍大佐
Kaigun-taisa 		海軍中佐
Kaigun-chūsa 		海軍少佐
Kaigun-shōsa 		海軍大尉
Kaigun-tai-i 		海軍中尉
Kaigun-chūi 		海軍少尉
Kaigun-shōi 		海軍少尉候補生 & 兵曹長
Kaigun-shōi-kōhosei & Heisōchō
Translation[5][6] Commander-in-chief Admiral Vice admiral Rear admiral Captain Commander Lieutenant commander Lieutenant Sub-lieutenant Ensign Midshipman & Warrant Officer
Collar
service uniform[7][6] 		                     
Shoulder
white uniform[6][5] 		                     
Sleeve
M1870 uniform[8] 		                   
Sleeve
M1871 uniform[8] 		                   
Sleeve
M1883 uniform[8] 		         [9]          
Sleeve
M1914 uniform[8][5][6] 		                     
Sleeve
service uniform[5][6] 		                     
Shoulder & sleeve
Special duty officers[7]
               

Rank flags

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Rank Admiral Vice admiral Rear admiral
(1870–1871)      
(1871–1889)    
(1889–1896)      
(1896–1945)[10]    

Cadet and warrant officer ranks

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Midshipman and Warrant Officer's collar insignia are the same (both were treated as officer-equivalent), but in detail, the midshipman's position is above Warrant Officer. Furthermore, midshipman rank was not via commissioned, but it was via ordered or warranted. Cadet is much more likely to be classified as slightly higher than a non-commissioned officer, since the cap's line is only one, compared to the commissioned officer's cap which has two lines and the type 3 uniform is based on the enlisted personnel.

See the table below for details regarding the cadet/WO ranks and insignia:

Insignia[6] Title Translation
Collar Shoulder Sleeve
      海軍少尉候補生
(Kaigun-shōi-kōhosei)
海軍予備少尉候補生
(Kaigun-yobi-shōi-kōhosei) 		Midshipman/Reserve Midshipman
海軍予備学生
(Kaigun-yobi-gakusei) 		Reserve student
海軍見習尉官
(Kaigun-minarai-ikan) 		Apprentice (specialist branch)

e.g., Apprentice surgeon (Medical branch)

     [c] 兵曹長
(Heisōchō) 		Warrant Officer
      海軍兵学校生徒
(Kaigun-heigakō-seito)
海軍予備生徒
(Kaigun-yobi-seito) 		Cadet/Reserve cadet
海軍委託生
(Kaigun-itakusei)

Non-commissioned officer and enlisted personnel rates

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For seamen and petty officers, which were selected from enlisted men or conscripts and given training in the Navy's service/technical school, the names were different from the army names but were equal in rank. Different service branches within the navy had their specialisation augment the common rank name. For example, Imperial Japanese Navy Air Service (IJNAF) had "Flight" (飛行 Hikō)[d] incorporated into the common rank name, such as Flight Petty Officer First Class (Japanese: 一等飛行兵曹, romanized: Ittō-hikō-heisō) or Flight Seaman Second Class (二等飛行兵 Nitō-hikō-hei).[12][page needed][2][page needed] For practical use, these rank names were often shortened to 一飛曹 (Ippisō) or 二飛 (Nihi), respectively.[12][page needed] The enlisted rank insignia were changed in April 1942[2][page needed] and the common rank names were updated in November 1942.[12][page needed][2][page needed][13]

The enlisted insignia prior to changes in 1942 was a round patch that contained one anchor for the lowest grade, two crossed anchors for the middle grade and two crossed anchors with a cherry blossom for the highest grade. The petty officer insignia followed the same pattern but additionally had wreaths. The insignia was red on black background for winter dark-blue uniforms (also for flight suits), black on white background for summer white uniforms, and red on green background for Special Naval Landing Forces (SNLF) uniforms. The anchor would be replaced by different symbols for specialised branches; for example, aviation had an aircraft instead.[11][page needed] After the changes in 1942, the insignia was a black patch that was square-shaped on the top and arrow-shaped on the bottom. Inside the patch, all branches had a yellow anchor and one yellow horizontal stripe for the lowest grade, two for the middle grade and three for the highest grade. Similarly as before, the petty officer insignia followed the same pattern but additionally had wreaths. For all ranks there was also a cherry blossom in the middle, which changed its colour based on the branch; for example, light blue represented aviation.[11][page needed]

Rank group Petty officers Enlisted/Seamen
–1942[14]              
一等兵曹
(Ittōheisō) 		二等兵曹
(Nitōheisō) 		三等兵曹
(Santōheisō) 		一等水兵
(Ittōsuihei) 		二等水兵
(Nitōsuihei) 		三等水兵
(Santōsuihei) 		四等水兵
(Yontōsuihei)
Translation Petty officer first class Petty officer second class Petty officer third class Seaman first class Seaman second class Seaman third class Seaman fourth class
1942–1945[15][6]              
上等兵曹
(Jōtōheisō) 		一等兵曹
(Ittōheisō) 		二等兵曹
(Nitōheisō) 		水兵長
(Suiheichō) 		上等水兵
(Jōtōsuihei) 		一等水兵
(Ittōsuihei) 		二等水兵
(Nitōsuihei)
Translation Chief petty officer Petty officer first class Petty officer second class Leading seaman Senior seaman Seaman first class Seaman second class

Service branch colours

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The branch of the Navy in which non-executive personnel served was indicated by a colour code. For officers, including midshipmen, it was the colour of cloth placed as background to the cuff stripes, on both sides of the gold lace on the shoulder boards, and as longitudinal piping on the collar patches. Midshipmen and cadets wore a coloured anchor on the cap, which cadets wore on the shoulder boards as well.[16] The branch of enlisted men was denoted by the colour of the cherry blossom flower on their rank patch; line personnel using the default gold.

Color Branch
Purple Engineering[e]
Brown Ship and engine construction
Purple-brown Ordnance construction
Red Medical (surgeon, dentist and pharmacist) and Hospital(Corps)man (combat medic)
Pale green Legal
White Paymaster
Black Executive/Line/Survey officers
Light blue Aviation (Warrant and Special Duty Officer[f]) and Hydrography
Green Chief carpenters
Grey-blue Band master (Warrant and Special Duty Officer)

See also

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Notes

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  1. ^ Navy Land Forces and some Naval Air Service used to neglect this system to focus more on the rank itself, regardless of Reserve or Special Duty Officer status.
  2. ^ Same rank insignia used for the Gensui-kaigun-taishō (元帥海軍大将), worn with an additional badge.
  3. ^ Three cherry blossoms were on the sleeve before 1942.[11][page needed]
  4. ^ Before June 1941, it was "Aviation" (航空 Kōkū).[2][page needed]
  5. ^ After 1942, the engineering branch (above commissioned officer) were merged with the line branch. Hence, the purple branch colour was used only below Warrant Officer.
  6. ^ After 1942, aviation Special Duty Officer was merged with line Special Duty Officer. Hence, the light blue branch colour was used only below Warrant Officer.

References

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  1. ^ a b Rosignoli 1983, p. 348.
  2. ^ a b c d e Tagaya 2003.
  3. ^ Lundstrom 2005a, pp. 454–457.
  4. ^ Lundstrom 2005b, p. 491.
  5. ^ a b c d Rosignoli 1983, Plate 53–54.
  6. ^ a b c d e f g Mollo 2001, p. 187.
  7. ^ a b Rosignoli 1983, Plate 55.
  8. ^ a b c d Nakanishi 2001, p. 69.
  9. ^ The commander's sleeve rank insignia on model 1883 continued until 1914, with one thin stripe and three thick stripes from the cuff.
  10. ^ OKM 1939, pp. 94–95.
  11. ^ a b c Nila 2002.
  12. ^ a b c Hata, Izawa & Shores 2011.
  13. ^ Lundstrom 2005b, pp. 599–613.
  14. ^ Rosignoli 1983, Plate 56–57.
  15. ^ Rosignoli 1983, Plate 58.
  16. ^ Rosignoli 1983, p. 349.

Bibliography

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  • Hata, Ikuhiko; Izawa, Yasuho; Shores, Christopher (2011). Japanese Naval Air Force Fighter Units and their aces, 1932-1945. London, UK: Grub Street. ISBN 9781906502843.
  • Lundstrom, John B. (2005a). The First Team: Pacific Naval Air Combat from Pearl Harbor to Midway (New ed.). Annapolis, Maryland: Naval Institute Press. ISBN 1-59114-471-X.
  • Lundstrom, John B. (2005b). First Team and the Guadalcanal Campaign: Naval Fighter Combat from August to November 1942 (New ed.). Annapolis, Maryland: Naval Institute Press. ISBN 1-59114-472-8.
  • Mollo, Andrew (2001). The Armed Forces of World War II: Uniforms, Insignia & Organisation. Leicester: Silverdale books. ISBN 1-85605-603-1.
  • Nila, Gary (2002). Japanese Naval Aviation Uniforms and Equipment 1937-1945. Osprey Publishing. ISBN 1841764655.
  • Nakanishi, Ritta (2001). Japanese Military Uniforms 1841-1929. Dainippon Kaiga Co., Ltd. ISBN 978-4499227377.
  • Oberkommando der Marine (1992) [1939]. Flaggenbuch (in German). Berlin: Druck und verlag der reichsdruckerei.
  • Rosignoli, Guido (1983). Badges and insignia of World War II: Air Force, Naval, Marine. Blandford Colour Series. New York: Blandford Press Ltd. ISBN 0-671-06008-2.
  • Tagaya, Osamu (2003). Imperial Japanese Naval Aviator 1937-45. Osprey Publishing. ISBN 1841763853.
  • Kaigun-fuku-sei 海軍服制 [Naval uniform] (in Japanese). Tokyo: Kawarudo. 1901. Retrieved 4 September 2022.
  • Imperial Japanese Arny and Navy Uniforms and Equipment. London: Arms & Armour. 1975. Retrieved 30 October 2022.
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