May. Along the coast, ROK I Corps' forces met almost no opposition, and on the 9th the ROK 11th Division's tank destroyer battalion advanced some beyond the Missouri Line to occupy the town of Kansong, where Route 24 ended in a junction with the coastal highway. Forces of the ROK 5th Division on the left flank of the advance in the X Corps' zone reached the Missouri Line the same day. The other four divisions, though still as much as short of the line on the 9th, had made long daily gains against scattered delaying forces. In the west, the bulk of the ROK 1st Division advancing up Route 1 between 7 and 9 May levered KPA forces out of successive positions and finally forced them into a general withdrawal. Setting the 15th Regiment in a patrol base up Route 1, General Kang pulled his remaining forces back into his No-Name Line fortifications. From other bases in the I, IX and X Corps' sectors, patrols doubled the depth of their previous reconnaissance but had no more success in making firm contact than had patrols working from the No-Name Line. Available intelligence in-formation indicated that the PVA 64th, 12th, 60th and 20th Armies were completely off the west and west central fronts for refurbishing and that each of the four armies still in those sectors, the 65th 63rd, 15th and 27th, had only one division forward as a screen while remaining divisions prepared to resume the offensive. Since there were no firm indications that the resumption was an immediate prospect, however, General Van Fleet on 9 May issued plans for returning the Eighth Army to the Kansas Line. In the first phase of the return I, IX and X Corps were to attack, tentatively on the 12th, towards the Topeka Line running from Munsan-ni east through Chuncheon, then northeast toward Inje. ROK III Corps and ROK I Corps in the east meanwhile were to continue their attack to the Missouri Line, a step which would carry them above the Kansas Line. Van Fleet decided against the Topeka Line advance on the 11th after changes in the intelligence picture indicated that PVA/KPA forces were within a few days of reopening their offensive. Air observation of enemy troops where none previously had been seen suggested forward movements under cover of darkness, reports told of large enemy reconnaissance patrols, and both agents and prisoners