''Ôban'' was a title held by the wardens of [[Edo castle|Edo]], [[Osaka castle|Osaka]], and [[Nijo castle|Nijô castles]] during the [[Edo period]].
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The ''Ôban'', or "Great Guard," was one of the three chief shogunate guard forces in the [[Edo period]]. While the ''[[koshogumi|koshôgumi]]'' and ''[[shoinban]]'' oversaw the defense of [[Edo castle]] and of the shogun's person, the ''Ôban'' oversaw the defenses of [[Nijo castle|Nijô]] and [[Osaka castle]]s.
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==References==
==References==
*Arai Hakuseki, Joyce Ackroyd (trans.), ''Told Round a Brushwood Fire'', University of Tokyo Press (1979), 322.
*Arai Hakuseki, Joyce Ackroyd (trans.), ''Told Round a Brushwood Fire'', University of Tokyo Press (1979), 322.
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*Mitani Hiroshi, David Noble (trans.), ''Escape from Impasse'', International House of Japan (2006), xxx.