岩倉使節団
Although Ōkubo Toshimichi and others were more active and influential in establishing the new Meiji government, Saigō retained a key role, and his cooperation was essential in the abolition of the han system and the establishment of a conscript army. In 1871 he was left in charge of the caretaker government during the absence of the Iwakura Mission (1871–73).