Complex sentence: Sōko sided with Hideyoshi's Western Army in the Battle of Sekigahara, after the Western Army's defeat, Sōko was welcomed by Hachisuka Iemasa the daimyo of Awa Province.
Split into simpler sentences: Sōko sided with Hideyoshi's Western Army in the Battle of Sekigahara. After the Western Army's defeat, Sōko was welcomed by Hachisuka Iemasa the daimyo of Awa Province.