Buntaichō

The Buntaichō (分隊長) was a naval aviation position in the Imperial Japanese Navy Air Service (IJNAS), normally held by a Lieutenant, who commanded a division of flight personnel (buntai) in an air group.

Administrative role

On the ground, the Buntaichō commanded a division of flight personnel, called buntai (分隊), which was the smallest administrative unit in IJNAS. Buntai was made up of the required number of personnel necessary to fly one chūtai (中隊), which typically consisted nine aircraft. For example, in bomber units there were be much more personnel than the aircraft.[1]

On an aircraft carrier, the air group typically consisted of three squadrons, where each was related to a specific aircraft type (i.e., either dive bomber, torpedo bomber or fighter). The senior Buntaichō commanded all flight personnel of a specific squadron in addition to its first division, while the other two junior Buntaichōs commanded the second and the third division (depending how many divisions were in a squadron). On a light carrier, there might have been just one Buntaichō in the squadron.[2]

Buntaichō was one of the two flight command ratings in the naval air hierarchy, the other being the Hikōtaichō (飛行隊長), who commanded a unit that was composed of all flight personnel in the air group, called hikōtai (飛行隊), which was made up of several buntais.[2]

Combat role

In flight, each Buntaichō commanded a division of nine aircraft, called chūtai. Note that buntai referred to a division of flight personnel, while chūtai referred to an aircraft formation that was piloted by those personnel. Therefore, in flight, Buntaichō was referred to as Chūtaichō (中隊長).[1]

If the Hikōtaichō was flying the same aircraft type as the Buntaichō, he usually commanded the whole strike force, while the Buntaichō commanded one of the chūtais. For example, both during the Battle of the Eastern Solomons and the Battle of the Santa Cruz Islands, Lieutenant Commander Mamoru Seki (Shōkaku Hikōtaichō) commanded the strike force, while Lieutenant Keiichi Arima (Shōkaku dive bomber Buntaichō) commanded one of the dive bomber chūtais.[3][4]

The Buntaichō was not necessary a pilot. For example, Lieutenant Keiichi Arima was an observer; his Aichi D3A dive bomber was piloted by Petty Officer First Class Kiyoto Furuta.[5] In land-based bomber units, Buntaichō was often in the observer seat.[1]

Aircraft marking

In carrier-based units, the position of Buntaichō was marked by two horizontal stripes on the tail of an aircraft.[2] However, this marking should not be confused with the vertical stripes around the rear of the fuselage, which indicated the carrier to which the aircraft belonged.

See also

References
  1. Tagaya 2001.
  2. Lundstrom 2005a, p. 183-185.
  3. Lundstrom 2005b, p. 108-178.
  4. Lundstrom 2005b, p. 324-460.
  5. Lundstrom 2005b, p. 136 & 415.
Sources
  • 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.
  • Parshall, Jonathan; Tully, Anthony (2005). Shattered Sword: The Untold Story of the Battle of Midway. Dulles, Virginia: Potomac Books. ISBN 1-57488-923-0.CS1 maint: ref=harv (link)
  • Hata, Ikuhiko; Yasuho Izawa; Christopher Shores (2011). Japanese Naval Air Force Fighter Units and their aces, 1932-1945. London, UK: Grub Street. ISBN 9781906502843.
  • Tagaya, Osamu (2001). Mitsubishi Type 1 Rikko 'Betty' Units of World War 2. Osprey Combat Aircraft #22. Osprey Publishing. ISBN 184176082X.
  • "Accounts - Keiichi Arima" (Interview). Interviewed by Joel Shepherd and Kan Sugahara.
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