It is considered that Masamune thought of the scenario of the decisive battle against the army of bakufu seeking for the reign of Japan, then he was preparing a draft tactical strategy on a map for this battle as "an internal tentative strategy upon the order of the council of war of Sendai Domain."
また、政宗は幕府軍と天下を賭けて戦うことになった場合には、という、幕府軍との決戦に備えた図上演習、すなわち作戦立案をしていたと言われている。