Kobayakawa Hideaki
Shima Sakon, one of Mitsunari's commanders, requested permission to attack the nearest Tokugawa troops. Later, Sakon clashed with Honda Tadakatsu at the Battle of Kuisegawa. As a result, the Eastern Army suffered significant losses from the battle and had to pull back from the Mino Akasaka territory to Sekigahara. Not wanting to lose the advantage, Mitsunari ordered his army to surround Ieyasu at Sekigahara. Ishida deployed his troops in a strong defensive position, flanked by two streams with high ground on the opposite banks. His right flank was reinforced by "daimyō" Kobayakawa Hideaki on Mount Matsuo.