Rank Insignia Comparison Table IJN Rank Insignia Officers (1931-45) Enlisted (1931-42) Enlisted (1942-45) Training Insignia USN Rank Insignia Officers (1941-43) Enlisted (1941-44)
  IJN Petty Officers and Seamen Rank Insignia 1942-1945
 
上等兵曹 - Chief Petty Officer, 一等兵曹 - Petty Officer 1st class, 二等兵曹 - Petty Officer 2nd class, 水兵長 - Leading Seaman, 上等水兵 - Chief Seaman, 一等水兵 - Seaman 1st class
Chief
Petty Officer
Petty Officers
1st Class
Petty Officers
2nd Class
Leading
Seaman
Chief
Seaman
Seaman
1st class
兵科 [hei ka] Seaman Branch
上等兵曹 - Chief Petty Officer 一等兵曹 - Petty Officer 1st class 二等兵曹 - Petty Officer 2nd class 水兵長 - Leading Seaman 上等水兵 - Chief Seaman 一等水兵 - Seaman 1st class
上等兵曹
[jōtō heisō]
一等兵曹
[ittō heisō]
二等兵曹
[nitō heisō]
水兵長
[suihei chō]
上等水兵
[jōtō suihei]
一等水兵
[ittō suihei]
Other Branches
飛行科
[hikō ka]
Aviation
整備科
[seibi ka]
Ground Crew
機関科
[kikan ka]
Engineering
工作科
[kōsaku ka]
Construction
技術科
[gijutsu ka]
Technical
衛生科
[eisei ka]
Medical
主計科
[shukei ka]
Paymaster
軍楽科
[gungaku ka]
Bandsman
特技 [tokugi] Training Insignia   善行章 [zenkō shō] Good Conduct Chevrons
普通科特技 - Basic Training Insignia 高等科特技 - Advanced Training Insignia 善行章 - Good Conduct Chevron 特別善行章 - Excellent Conduct Chevron 善行章二線 - Double Good Conduct Chevron 善行章三線 - Triple Good Conduct Chevron
普通科特技
[futsū ka tokugi]
Basic Training
高等科特技
[kōtō ka tokugi]
Advanced Training
善行章
[zenkō shō]
Good Conduct
特別善行章
[tokubetsu zenkō shō]
Excellent Conduct
善行章二線
[zenkō shō nisen]
Double Chevron
善行章三線
[zenkō shō sansen]
Triple Chevron

Sources:
1. Gary Nila, “Japanese Naval Aviation: Uniforms & Equipment 1937-1945”, 2002
2. 日本海軍軍装図鑑: 幕末・明治, Etsuka Yagyu “Uniforms of Japanese Navy 1867-1945”, 2003
3. Gary Nila, Robert A. Rolfe “Japanese Special Naval Landing Forces: Uniforms & Equipment 1932-1945”, 2006
4. 大日本帝国陸海軍―軍装と装備 明治・大正・昭和, Tadao Nakata “Imperial Japanese Army and Navy Uniforms & Equipment”,2009