text: It was fought near the mountains of Sasao, Matsuo, and Nangu and the fog on the morning of October 21st delayed the battle.
full_question: It was fought near the mountains of Sasao, Matsuo, and Nangu and the fog on the morning of October 21st delayed the battle. During the battle the victor ordered gunners to fire blanks on the nephew of Toyotomi Hideyoshi. This action inspired Kobayakawa Hideaki to lead 15,000 troops against the western army. This betrayal led other samurai to defect and turn the tide of battle against Ishida Mitsunari. Fought in 1600 between the Western and Eastern armies, this is for ten points what Tokugawa Ieyasu battle that led to the founding of his namesake shogunate?
first_sentence: It was fought near the mountains of Sasao, Matsuo, and Nangu and the fog on the morning of October 21st delayed the battle.