 When the remnants of his forces learned that the "shōgun" had abandoned them, they departed Osaka Castle, which was later surrendered to Imperial forces without resistance.Yoshinobu later claimed that he had been disturbed by the Imperial approval given to the actions of Satsuma and Chōshū, and, once the brocade banner had appeared, he had lost all will to fight.French advisors Jules Brunet and Cazeneuve, who were present at the battle, left Osaka and returned to Edo on 12 January, together with Enomoto Takeaki on board the "Fujiyama".