At first, the Satsuma army was defeated in Mifune, positioned as the left flank, and in the night of April 20, the Nomura troop in Otsu, which constituted the right-most flank of the Satsuma army, retreated as well.
先に薩軍最左翼の御船が敗れ、20日夜半には最右翼の大津の野村部隊も退却した。