A, no officers and seventy-four men for Company B, and no officers and eighty-one men for Company F. Casualties had reduced the other companies of both the 1st and 2nd Battalions to similar figures. Officer losses in the 2nd Battalion were especially high, among them the battalion commander, battalion executive officer, battalion operations officer, and two company commanders. The X Corps' line shaped by the withdrawals and shifts on 18 May amounted to a deep salient with the 3rd Battalion, 38th Infantry, at its apex in the Hill 800 complex and the 1st Marine Division presenting a solid face toward Chuncheon on its northwest shoulder. Along its upper northeast shoulder, the 9th Infantry and 23rd Infantry carried the line from the Hill 800 mass beyond Han'gye to a point about short of Hill 683 (), which General Almond had set as the eastern limit of the 2nd Division's new sector. Hill 683 had fallen to the PVA, however, when the ROK 5th Division forces that had taken position along the Hongch'on River east of Chaun-ni were driven back and disorganized during the day by the PVA 34th Division. Units regrouped by nightfall, a mix of three battalions of infantry from the 35th and 36th Regiments and a company of engineers, were clustered around the village of Hasolch'i () located on a lateral mountain track south of Hill 683. Pulling out of contact at the southern end of the PVA 81st Division's roadblock at Sangam-ni early in the day, the bulk of the 3rd Regiment engineer battalion and the tank destroyer company of the ROK 7th Division now defended the X Corps' east flank from positions just below the village of P'ungam-ni (), southeast of Hasolch'i. Of the 7th Division's other forces, about 700 had been corralled far to the south in Chech'on; another group had been found at the village of Soksa-ri (), located on Route 20 over southeast of P'ungam-ni in the ROK III Corps' sector. ROK troops straggling into the area just north and east of Soksa-ri by nightfall attested to the misfortunes of the ROK 3rd and 9th Divisions when they had attempted to withdraw to Line Waco. In starting the move down the road from Hyon-ni, the ROK III Corps' commander, General Yu, had ordered the 9th Division to take the lead and deal with the PVA roadblock at Sangam-ni while the 3rd Division, bringing up