If these scenarios were present, then the scorched-earth strategy would have been enacted as follows: the Tokugawa family side would set fire to Edo-jo Castle and all of Edo town; this strategy was to be implemented to impede the enemy's military advance, the method; setting a devastating firestorm upon the Edo community prior to an attack from the 'expeditionary force to the east.'
敵の攻撃を受ける前に、江戸城および江戸の町に放火して敵の進軍を防いで焦土と化す作戦である。