Thank you for introducing Tatebanko with detailed explanation.
I, being Japanese, even didn't know about the story of Hachinoki noh play , which is very interesting. It reminds me of the Kamakura warriors throughout Japan rushed to the battlefield shouting "Iza Kamakura" during the Mongol invasion.
Behind the mobilization there must be the result of accumulating efforts for ruling by the Kamakura Shogunate like a story described in Hachinoki noh play.
Best regards,
Yu