In tactics, a choice to surrender was given before starting a siege and just before fall of the castle and negotiations were carried out for a bloodless surrender which enabled them to minimize the damage to their own troops.
戦術に於いても攻城戦の開始前と落城寸前の場面で降伏勧告を行っており、自軍被害も低減できる無血開城の交渉を行っている。