At the Battle of Nagashino in 1575, Sakai Tadatsugu led a detachment of 500 in a surprise assault that captured the Tobigasuzan fortress, held by Takeda forces. Carried out the day before the main battle, this action cut off the Takeda army's retreat and disrupted their rear. Tadatsugu's surprise attack is credited with significantly contributing to the crushing victory of the Oda-Tokugawa combined forces the following day, achieved through the famous three-volley volley fire behind palisades. Though Tadatsugu fought in many battles as one of the Four Heavenly Kings, the storming of Tobigasuzan is regarded as his greatest military achievement. The Sakai clan, later lords of Dewa-Shonai, survived as the 'foremost fudai daimyo' through the Meiji Restoration.