Satsu-gun (including the allies) was defeated at the battle of Tabaruzaka on March 20 and the battle of Anseibashi-guchi on April 8, on the verge of being attacked from multiple sides by the Government army, who were going south, and the backside of the Kumamoto Chindai Army; on April 14, Satsu-gun retreated to Kiyama by breaking the siege on Kumamoto-jo Castle.
3月20日、田原坂の戦いに敗れ、次いで4月8日の安政橋口の戦いで敗れて政府南下軍と背面軍・熊本鎮台軍に挟撃される形になった薩軍（党薩各派を含む）は4月14日、熊本城の囲みを解いて木山に退却した。