The chapter of strategy which now opens is a fascinating one to any student of war, and fortunately its main features can be readily appreciated also by any layman who makes an intelligent study of a map of Manchuria and the Liao-tung Peninsula. The prime object of the Japanese plainly was to cut General Kuropatkin's extended line of communications, isolate Port Arthur, and then attempt to envelope his main force by advancing simultaneously from the south, the east, and the northeast. It was consequently necessary, as a preliminary, to establish the First Army securely in Manchuria, it being clear that with this menace on his left flank, General Kuropatkin would not be able to detach many troops to the south to prevent the investment of Port Arthur. Everything, therefore, depended on the fortune that would attend the advance of General Kuroki across the Yalu, and the Moltkes at Tokio, after a patient study of all the conditions of an intricate problem, had thought out two great alternative schemes to meet the eventuality either of victory or defeat. In case of General Kuroki's finding the task of crossing the Yalu unaided to be an insuperable one, the Second Army, under General Oku, was to be landed at Takushan, a port on the coast some miles to the west of the mouth of the river, and thence to strike a blow at General Sassulitch's right flank. On the other hand, if Kuroki met with success, Oku's army was to be landed at a point on the Liao-tung Peninsula to cut Kuropatkin's communications and invest Port Arthur. As we have seen, General Kuroki's signal triumph at the Yalu River rendered the first alternative unnecessary, and opened the way for the more decisive and dramatic stroke involved in the second scheme. [Sidenote: A Model of Organization]