Tadakatsu was a great commander, not only brave but also good at strategies, and he tried to break up the busho of the Western Army by issuing countless numbers of written oath with Naomasa II at the Battle of Sekigahara.
忠勝は勇猛なだけではなく知略も備えた名将で、関ヶ原の戦いでは井伊直政と共に誓紙を何枚も発行して西軍武将の切り崩しにも務めている。