Glancing back over the year 1951 with the benefit of hindsight, it is evident that Marine “uncommon valor” during this period was supplemented by such outstanding innovations as helicopter-borne assaults and lightweight body armor, concepts brought to fruition by the pressure of combat. It is also apparent that Marine training, both for officers and enlisted men, paid off handsomely under the demands of practically every type of land warfare. The Division chalked up a commendable record of service fighting on the east-central front. Since the UN commander desired to have EUSAK’s only amphibious trained and equipped division near a coast offering a suitable selection of landing beaches, the Division was originally positioned in the east. Not since the Inchon landing, however, had the Marines been employed in their specialty, amphibious assault. Subsequent to the unprecedented Chosin Reservoir campaign of late 1950 the Division reorganized and refitted in South Korea near Masan. Then in January and February of 1951 came the prolonged guerrilla-hunting campaign (Map 5) some 60 air miles north of Masan. Division operations in this area covered more than 1,000 square miles.[375] [375] Gen O. P. Smith, USMC (Ret.), ltr of 28 Jan 59. The mountainous terrain offered cover and concealment for the clandestine operations of far too many enemy groups. A solution to this problem was found in “rice paddy patrols”--groups ranging from a fire team to a squad in size which penetrated the mountain areas on foot to flush out small enemy bands. In retrospect, had one squadron of helicopters been available at that time, and its quick lift capabilities utilized, the increased mobility and surveillance would have made quite a difference in the conduct of the action. Although land-based Marine air power had been under operational control of the Fifth Air Force during the Chosin Reservoir fighting, a verbal agreement allowed the 1st MAW commander to provide directly necessary support to the 1st Marine Division. At the same time, carrier-based Marine planes were flying on the west coast along with other Allied planes harrassing enemy traffic. During the guerrilla hunt VMO-6 planes provided air support to the 1st Marine Division while Marine attack aircraft were busy elsewhere along the Eighth Army front. Marine pilots, operating under JOC control, felt frustrated because they were unable to provide the timely close air support desired by the infantry. The Marine viewpoint held that too many links in the Air Force system of control caused an excessive delay in bringing air power over the target. This system continued for the remainder of the year.