The Battle of Hondo Castle (December 29, 1637) was a victory for the rebel peasants and ronin during Shimabara Rebellion. After a successful uprising in Shimabara Domain, several thousand of rebels crossed the sea to the nearby Amakusa islands, domain of the Terazawa family, to help the local Christians who rose to arms at the same time. The local Terazawa samurai, overconfident and believing they had to deal with their own peasants only, attacked the rebels on the open field and suffered terrible loses. The surviving Terazawa soldiers took refuge in Tomioka Castle, which was attacked within a few days.