the way. At Chunghwa, the Third Division under Kuroda Nagamasa joined the First, and continued to the city of Pyongyang located behind the Taedong River. A total of 10,000 Korean troops guarded the city against the 30,000 advancing Japanese. They were led by various commanders including the Generals Yi Il and Gim Myeong-won, and their defense preparations had assured that no boats were available for Japanese use. At night, the Koreans silently crossed the river and launched a successful surprise attack against the Japanese encampment. However, this alerted the rest of the Japanese army, which attacked the rear of the Korean positions and destroyed the remaining reinforcements crossing the river. The remainder of the Korean troops then retreated back to Pyongyang, and the Japanese troops gave up their pursuit of the Koreans to observe the manner in which the Koreans had crossed the river. The next day, using what they had learned from observing the retreating Korean troops, the Japanese began sending troops to the other shore over the shallow points in the river, in a systematic manner, and at this sight the Koreans abandoned the city overnight. On July 20, 1592, the First and Third Divisions entered the deserted city of Pyongyang. In the city, they managed to capture 100,000 tons of military supplies and grain. Campaigns in Gangwon Province The Fourth Division under the command of Mōri Yoshinari set out eastward from the capital city of Hanseong in July, and captured a series of fortresses along the eastern coast from Anbyon to Samcheok. The division then turned inward to capture Jeongseon, Yeongwol, and Pyeongchang, and settled down at the provincial capital of Wonju. There Mōri Yoshinari established a civil administration, systematized social ranks according to the Japanese model, and conducted land surveys. Shimazu Yoshihiro, one of the generals in the Fourth Division, arrived at Gangwon Province late, due to the Umekita uprising, and finished the campaign by securing Chuncheon. Campaigns in Hamgyong Province and Manchuria Katō Kiyomasa, leading the Second Division of more than 20,000 men, crossed the peninsula to Anbyon County with a ten-day march, and swept north along the eastern coast. Among the castles captured was Hamhung, the provincial capital of Hamgyong Province. There a part of the Second Division was assigned to defense and civil administration. The rest of the division, 10,000 men, continued north, and fought a battle on August 23 against the southern