of three army corps and mustering in all 51,000 men, was to cross rapidly to Fusan, on the south coast of the peninsula, and immediately commence a movement northward towards the capital, Seoul, one corps moving by the eastern coast-road, one by the central route, and one by the western coast-line. Thereafter the other four corps, which formed the first fighting line, together with the corps under the direct orders of the commander-in-chief, Ukida Hideiye, were to cross, for the purpose of effectually subduing the regions through which the van had passed; and, finally, the two remaining corps of the second line were to be transported by sea up the west coast of the peninsula, to form a junction with the van which, by that time, should be preparing to pass into China over the northern boundary of Korea, namely, the Yalu River. For the landing place of these reinforcements the town of Phyong-yang was adopted, being easily accessible by the Taidong River from the coast. In later ages Japanese armies were destined to move twice over these same regions, once to the invasion of China, once to the attack of Russia, and they adopted almost the same strategical plan as that mapped out by Hideyoshi in the year 1592. The forecast was that the Koreans would offer their chief resistance, first, at the capital, Seoul; next at Phyong-yang, and finally at the Yalu, as the approaches to all these places offered positions capable of being utilized to great advantage for defensive purposes. Landing In Korea and Advance of the Invaders. On the 24th of May 1592 the first army corps, under the command of Konishi Yukinaga, crossed unmolested to the peninsula; next day the castle of Fusan was carried by storm, which same fate befell, on the 27th, another and stronger fortress lying 3 miles inland and garrisoned by 20,000 picked soldiers. The invaders were irresistible. From the landing-place at Fusan to the gates of Seoul the distance is 267 miles. Konishi's corps covered that interval in 19 days, storming two forts, carrying two positions and fighting one pitched battle _en route_. On the 12th of June the Korean capital was in Japanese hands, and by the 16th four army corps had assembled there, while four others had effected a landing at Fusan. After a rest of 15 days the northward advance was resumed, and July 15th saw Phyong-yang in Japanese possession. The distance of 130 miles from Seoul to the Taidong had been traversed in 18 days, 10 having been occupied in forcing the passage of a river which, if held with moderate resolution and skill, should have stopped the Japanese altogether. At this point, however, the invasion suffered a check owing to a cause which in modern times has received much attention, though in Hideyoshi's days it had been little considered; the Japanese lost the command of the sea. Fighting at Sea.