This is a picture showing the attack of the Taira clan, which is sheltered in the valley of the right-hand general Koichi Yoritomo, and Yoshitsune Noriyori as the two generals, and a manual maneuver using long and short spears., Utagawa Yoshitsuya, 1847–52

In preparation to conquer the heike at their stronghold in ichinotani, lord yoritomo makes noriyori and yoshitsune the leaders of two sides with long and short spears and observes their practice maneuvers. Date: 1847–52. Medium: ink and color on paper, woodblock print. Collection: Museum of Fine Arts Boston. In Preparation to Conquer the Heike at Their Stronghold in Ichinotani, Lord Yoritomo Makes Noriyori and Yoshitsune the Leaders of Two Sides with Long and Short Spears and Observes Their Practice Maneuvers