The Genkō War, Part I

Season 7, Episode 15: The Genkō War, Part I
The memorial stone which marks the location of Akasaka Fortress, which was burned down in 1331. Source: I, KENPEI, CC BY-SA 3.0, via Wikimedia Commons
The memorial stone marking the location of Kami-Akasaka (Upper Akasaka) Fortress, which was destroyed in early 1333 after its water supply was cut off. Source: I, KENPEI, CC BY-SA 3.0, via Wikimedia Commons
A scale model of Chihaya Fortress. The original fortification was destroyed long after the Genko War concluded. Source: Wikiwikiyarou, CC BY-SA 3.0, via Wikimedia Commons
A dramatic painting by Utagawa Yoshikazu imagining the siege of Chihaya Fortress, created in the 1800s. The real structure was not a fully-developed stone castle, but a large well-made fort. Note the Hojo clan crest on the banner in the center bottom of the piece. Public Domain