All Marine missions in the guerrilla hunt had been successfully accomplished, so that the Division could be relieved at any time by the 2d ROK Division. There were 120 counted enemy dead and 184 prisoners. Only estimates are available for the wounded, but there is no doubt that the total NKPA casualties were crippling. At any rate, the NKPA 10th Division was destroyed as a fighting force without accomplishing any of its objectives. Marine casualties from 18 January to 15 February were 19 KIA, 7 DOW, 10 MIA, 148 WIA, and 1,751 of a nonbattle classification, largely frostbite cases soon restored to duty.[76] [76] 1stMarDiv Periodic Operations Report (_POR_) 18 Jan-15 Feb 51, 71–159. _New Mission for the Marines_ On 11 February, General Smith flew to Taegu to discuss the next Marine mission with General Ridgway. The EUSAK commander spoke favorably of employing the 1st Marine Division to relieve the 24th Infantry Division in the critical Han River corridor, where recent UN advances had been made. He also recognized the advantages of committing the Marines to the east coast, so that they could be held in readiness for an amphibious operation. A third possibility was the Yoju corridor of the IX Corps zone (Map 1). As “the most powerful division in Korea,” said Ridgway, “the Marines would be astride what he considered the logical route for an expected enemy counterthrust.”[77] [77] Smith, _Notes_, 1441–1445. No decision was reached that day. At midnight the CCF attack materialized; and the central front was the area of decision, as Ridgway had predicted. Naturally, the next mission for the Marines had to be reconsidered in the light of this development. On 12 February EUSAK warning orders alerted the 1st Marine Division to be prepared to move to Chungju, in the rear area of the IX Corps front where the heaviest CCF attacks were taking place. The Division was further directed to make an immediate reconnaissance of the Chungju area while the 1st KMC Regiment prepared for a move to Samchok on the east coast and attachment to the ROK Capitol Division. The following day brought orders from the Eighth Army to initiate these movements on 15 February 1951.[78] Thus the Pohang-Andong guerrilla hunt came to an end with the Marines on their way to new employment in the battle line of the Eighth Army. [78] 1stMarDiv _HD_, Feb 51. CHAPTER IV Operation Killer _The Move to the Chungju Area--Marine Planes in Action--Planning for the New Operation--The Jump-Off on 21 February--Stiffening of Chinese Resistance--General Smith in Command of IX Corps--The Advance to Phase Line_ ARIZONA_--JOC Air Control System Criticized_ The CCF counterattack which began northeast of Wonju on 11 February 1951 came in reaction to the unremitting pressure exerted during the previous month by the Eighth Army. Twice beaten during a recent six-week period and pushed back some 200 miles, EUSAK had shown amazing powers of recuperation.