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Ministry of the Military

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Ministry of the Military

Pre-modern Japan
Imperial seal of Japan
Part of a series on the politics and
government of Japan during the
Nara and Heian periods

Chancellor / Chief Minister
Minister of the Left Sadaijin
Minister of the Right Udaijin
Minister of the Center Naidaijin
Major Counselor Dainagon
Middle Counselor Chūnagon
Minor Counselor Shōnagon
Eight Ministries
Center Nakatsukasa-shō  
Ceremonial Shikibu-shō
Civil Administration Jibu-shō
Popular Affairs Minbu-shō
Military Hyōbu-shō
Justice Gyōbu-shō
Treasury Ōkura-shō
Imperial Household Kunai-shō

The Ministry of the Military (兵部省 Hyōbu-shō), also known as Ministry of War and sometimes called Tsuwamono no Tsukasa, was a division of the eighth century Japanese government of the Imperial Court in Kyoto,[1] instituted in the Asuka period and formalized during the Heian period. The Ministry was replaced in the Meiji period.


This part of the government bureaucracy has been variously identified as the Ministry of the Military[2] and the Ministry of War.[3]

The highest-ranking official or head of the military (兵部卿, Hyōbu-kyō) was ordinarily a son or a close relative of the Emperor. This important court officer was responsible for directing all military matters; and after the beginning in the late 12th century, this military man would have been empowered to work with the shogunate on the emperor's behalf.[2]

The ambit of the Ministry's activities encompasses, for example:

  • oversight of the rosters of military officers, including examinations, appointment, ranks, etc.[4]
  • dispatching of troops[4]
  • supervision of arsenals of weapons, guards, fortifications and signal fires[4]
  • maintenance of pastures, military horses, and public and private horses and cattle[4]
  • administration of postal stations[4]
  • control of the manufacture of weapons and weapon-makers[4]
  • oversight of drumming and in flute playing[4]
  • control of public and private means of water transportation[4]
  • regulation of the training of hawks and dogs.[4]


The ministry was established as part of the Taika Reforms and Ritsuryō laws which were initiated in the Asuka period and formalized during the Heian period. After 702, the Hyōbu-shō replaced the Hyōseikan, which was created in 683.[5]

In the Edo period, titles associated with the ministry became ceremonial titles.

In the Ministry of War and Ministry of the Navy.


The Asuka-, Nara- and Heian-period Imperial court hierarchy encompassed a ministry dealing with military affairs.[3]

In the 18th century, the top ritsuryō officials within this ministry structure were:

  • Minister or chief official (兵部卿 Hyōbu-kyō), usually a son or a close relative of the Emperor.[6]
  • First assistant to the Minister (兵部大輔 Hyōbu-taifu).[2]
  • Second assistant to the Minister (兵部少輔 Hyōbu-shō).[2]
  • Senior staff officer (兵部大丞 Hyōbu no dai-jō).[2]
  • Junior staff officers (兵部少丞 Hyōbu no shō-jō), two positions.[2]
  • Director of dance (隼人正 Hayato no kami), considered a very low rank.[2]
  • First assistant director (隼人佑 Hayato no jō).[2]
  • Alternate assistant director (隼人令史 Hayato no sakan).[2]

See also


  1. ^ Kawakami, Karl Kiyoshi. (1903). pp. 36-38.The Political Ideas of the Modern Japan, , p. 36, at Google Books
  2. ^ a b c d e f g h i Titsingh, Isaac. (1834). p. 431.Annales des empereurs du japon, , p. 431, at Google Books
  3. ^ a b Ministry of War, Sheffield.
  4. ^ a b c d e f g h i Kawakami, p. 37 n3,, p. 37, at Google Books citing Ito Hirobumi, Commentaries on the Japanese Constitution, p. 87 (1889).
  5. ^ Nussbaum, Louis Frédéric et al. (2005). "Hyōbusho" in p. 363.Japan Encyclopedia, , p. 363, at Google Books
  6. ^ Varley, Paul. (1980). Jinnō Shōtōki, p. 272; Titsingh, p. 431.


  • Kawakami, Karl Kiyoshi. (1903). The Political Ideas of the Modern Japan. Iowa City, Iowa: University of Iowa Press. OCLC 466275784. Internet Archive, full text
  • Nussbaum, Louis Frédéric and Käthe Roth. (2005). Japan Encyclopedia. Cambridge: Harvard University Press. 10-ISBN 0-674-01753-6; 13-ISBN 978-0-674-01753-5; OCLC 48943301
  • Titsingh, Isaac. (1834). Nihon Odai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691
  • Varley, H. Paul. (1980). Jinnō Shōtōki: A Chronicle of Gods and Sovereigns. New York: Columbia University Press. 10-ISBN 0-231-04940-4; 13-ISBN 978-0-231-04940-5; OCLC 59145842

Further reading

  • Friday, Karl F. (1992). Hired Swords: the Rise of Private Warrior Power in Early Japan. Stanford: Stanford University Press. 10-ISBN 0-804-71978-0/13-ISBN 978-0-804-71978-0; 10-ISBN 0-804-72696-5/13-ISBN 978-0-804-72696-2
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