In early September a distinguished soldier joined the Eighth Army staff. The Department of the Army sent Maj. Gen. Leven C. Allen to Korea to serve as General Walker's chief of staff. General Allen in World War II had been General Omar N. Bradley's army group chief of staff in the European Theater of Operations. He entered on duty at Eighth Army Headquarters in Taegu on 4 September. Colonel Landrum, highly regarded by General Walker, remained as deputy chief of staff. [21-17]
The Korean War was more than two months old before the first United Nations troops, other than those of the United States, arrived in Korea. Since the Republic of Korea was not a member of the United Nations, the ROK Army was considered an allied force.