Related time notesBattle of Hakodate, The Boshin War & the Origin Story of Tōgō Heihachirō6 May 202338:59Goryokaku and the shogunate's defence-in-depth systemNotable PointBattle of Hakodate(1869)4 May 20232:38:57Goryokaku: coastal defense becomes a final redoubtNotable Point