He then renamed himself again, taking the name Yamato OKUBO, recruited former bakufu infantry in the Goheishinden district (currently Adachi Ward, Tokyo), and met them in the Nagareyama District, Shimosa Province (currently Nagareyama City, Chiba Prefecture) in April; however, they were surrounded by the new government force and he surrendered to the government force headquarters in the Koshigaya District (currently Koshigaya City, Saitama Prefecture).
その後、大久保大和と再度名を改め、旧幕府歩兵らを五兵衛新田（現在の東京都足立区）で募集し、4月には下総国流山（現在の千葉県流山市）に屯集するが、新政府軍に包囲され、越谷（現在の埼玉県越谷市）の政府軍本営に出頭する。