Katō Yoshiaki (1563-1631)(加藤義明) was one of Toyotomi Hideyoshi's top generals, and commanded elements of Hideyoshi's fleet in his invasions of Korea and campaigns in Kyushu. Events February 1 - Sarsa Dengel succeeds his father Menas as Emperor of Ethiopia February 18 - The Duke of Guise is assassinated while besieging Orléans March - Peace of Amboise. ... // Events February 5 - Roger Williams emigrates to Boston. ... Hideyoshi in old age. ... The Seven-Year War was the conflict from 1592 to 1598 on the Korean peninsula, following two successive Japanese invasions of Korea. ... Kyushu region, Japan Kyushu (九州) is the third largest island of Japan and most southerly and westerly of the four main islands. ...

Following the battle of Shizugatake, Katō became known as one of the shichi-hon-yari (七本槍), or Seven Spears of Shizugatake, Hideyoshi's seven most trusted and experienced generals. The Battle of Shizugatake took place in 1583 in Japan. ...

After Hideyoshi's death, Katō fought alongside Tokugawa Ieyasu. Following the important victory at Sekigahara, Tokugawa doubled Katō's fief from 100,000 koku to 200,000. Shogun Tokugawa Ieyasu Tokugawa Ieyasu (previously spelled Iyeyasu); 徳川 家康 (January 31, 1543 – June 1, 1616) was the founder of the Tokugawa bakufu of Japan which ruled from the Battle of Sekigahara in 1600 until the restoration of the monarchy in 1868. ... The Battle of Sekigahara (関ヶ原の戦い Sekigahara-no-tatakai) was a decisive battle on September 15, 1600 (on the ancient Chinese calendar, October 21 on the modern calendar) that cleared the path to the Shogunate for Tokugawa Ieyasu. ... A koku (石) is a quantity of rice, historically defined as enough rice to feed one person for one year, then as 180. ...

Reference

Turnbull, Stephen (1998). 'The Samurai Sourcebook'. London: Cassell & Co.