[17] The two other reasons were the weakness of the Kimpo defenses and abandonment of plans for an amphibious strike along the east coast. Montross, Kuokka, and Hicks, _USMC Ops Korea_, v. IV, p. 253. Planning for a Marine-led assault had been directed by the EUSAK commander, General Van Fleet, early in 1952. The Marine division CG, General Selden, had given the task to his intelligence and operations deputies, Colonel James H. Tinsley and Lieutenant Colonel Gordon D. Gayle. On 12 March General Van Fleet came to the Marine Division CP for a briefing on the proposed amphibious assault. At the conclusion of the meeting the EUSAK commander revealed his concern for a possible enemy attack down the Korean west coast and told the Marine commander to prepare, in utmost secrecy, to move his division to the west coast. Lynn Montross, draft MS. Although Seoul was not actually within the area of Marine Corps responsibility, the capital city was only 33 air miles south of the right limiting point of the division MLR and 26 miles southeast of the left. The port of Inchon lay but 19 air miles south of the western end of the division sector. Kaesong, the original site of the truce negotiations, was 13 miles northwest of the nearest part of the 1st Marine Division frontline while Panmunjom was less than 5 miles away and within the area of Marine forward outpost security. From the far northeastern end of the JAMESTOWN Line, which roughly paralleled the Imjin River, distances were correspondingly lengthened: Inchon, thus being 39 miles southwest and Kaesong, about 17 miles west. [Illustration: MAP 2 K. WHITE WESTERN KOREA I CORPS SECTOR 1952–1953] The area to which the Marines had moved was situated in the western coastal lowlands and highlands area of northwestern South Korea. On the left flank, the division MLR hooked around the northwest tip of the Kimpo Peninsula, moved east across the high ground overlooking the Han River, and bent around the northeast cap of the peninsula. At a point opposite the mouth of the Kongnung River, the MLR traversed the Han to the mainland, proceeding north alongside that river to its confluence with the Imjin. Crossing north over the Imjin, JAMESTOWN followed the high ground on the east bank of the Sachon River for nearly two miles to where the river valley widened. There the MLR turned abruptly to the northeast and generally pursued that direction to the end of the Marine sector, meandering frequently, however, to take advantage of key terrain. Approximately 2½ miles west of the 1st Commonwealth Division boundary, the JAMESTOWN Line intersected the 38th Parallel near the tiny village of Madam-ni.