which battle did he encounter in his life?
The Battle of Sekigahara.
Battle of Sekigahara
The Battle of Sekigahara (Shinjitai: ; Kyūjitai: , Hepburn romanization: "Sekigahara no Tatakai") was a decisive battle on October 21, 1600 ("Keichō 5, 15th day of the 9th month"), that preceded the establishment of the Tokugawa shogunate.

Tokugawa Ieyasu took three more years to consolidate his position of power over the Toyotomi clan and the various "daimyō", but Sekigahara is widely considered to be the unofficial beginning of the Tokugawa shogunate, the last shogunate to control Japan.
when did singapore became part of the british empire 1819 who settled in its ancient time during 1826 to 1867? Penang and Malacca which battle did this place witness during 1932 to 1945? "Battle of Pasir Panjang", is one of the battles. who was this war fought between? Japan and Singapore. what was the reason for it? The battle was initiated upon the advancement of elite Imperial Japanese Army forces towards Pasir Panjang Ridge on 13 February. how many people were killed or injured in this? The Malay Regiment suffered a total of 159 killed. Six of them were British officers, seven Malay officers, 146 other ranks and a large but unspecified number wounded. the particular japanese army you mentioned above; what is their origin? In the mid-19th century, Japan had no unified national army and the country was made up of feudal domains with the Tokugawa shogunate in overall control. what does this particular term in the last portion refers to? It was established by Tokugawa Ieyasu after victory at the Battle of Sekigahara, ending the civil wars of the Sengoku period following the collapse of the Ashikaga shogunate. who was this leyasu person who established it? He was one of the three "Great Unifiers" of Japan, along with his former lord Oda Nobunaga and Toyotomi Hideyoshi.
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Battle of Sekigahara [SEP] Introduction
The Battle of Sekigahara (Shinjitai: ; Kyūjitai: , Hepburn romanization: "Sekigahara no Tatakai") was a decisive battle on October 21, 1600 ("Keichō 5, 15th day of the 9th month"), that preceded the establishment of the Tokugawa shogunate. Tokugawa Ieyasu took three more years to consolidate his position of power over the Toyotomi clan and the various "daimyō", but Sekigahara is widely considered to be the unofficial beginning of the Tokugawa shogunate, the last shogunate to control Japan.