During the first 5 days of the invasion, the 4 torpedo boats escorted convoys which transported NKPA troops down the east coast for unopposed landings as far south as Samchok. But on 2 July 1950 the tiny North Korean “navy” was almost literally blown out of the water when it encountered UN Task Group 96.5 off Chuminjin while escorting 10 converted trawlers. With more bravery than discretion, the small North Korean craft accepted battle with the American light cruiser _Juneau_ and two British warships, the light cruiser _Jamaica_ and the frigate _Black Swan_. Evidently the enemy hoped to score with a few torpedoes at the cost of a suicidal effort, but the U. N. guns sank 2 of the aluminum craft and drove a third to the beach, where it was soon destroyed along with 7 of the convoy vessels. The North Koreans were credited with “great gallantry” in the British dispatch after the fourth torpedo boat escaped.[52] But it was the last naval effort of any consequence by an enemy strangled in the net of the UN blockade. [52] Capt Walter Karig, USN, _Battle Report: The War in Korea_ (New York: Rinehart, 1952), 58–59. On land the NKPA columns advanced almost at will during the first 4 days. Nearly a hundred tanks and as many planes were employed by the two main columns advancing on Seoul, and on 27 June 1950 the ROK seat of government was removed to Taejon while Far East Air Force planes were evacuating United States citizens. ROK fugitives, winding southward in an endless stream of humanity, choked every road and multiplied the difficulties of the defense. To add to their misery, one of the bridges across the river Han was blown prematurely when masses of Koreans were crossing. The fall of Seoul on the 28th ended the first stage of the offensive as the NKPA forces halted for regrouping. Chunchon had surrendered in east-central Korea, so that the invaders held a ragged line stretching from Chumunjin on the east coast through Chunchon, Kapyong and Seoul to the port of Inchon on the west coast. The beaten and in some instances shattered ROK forces were meanwhile falling back through Suwon in the hope of establishing new positions of defense. _Early United States Decisions_ A strategy of delaying actions was the only course open to General MacArthur for the time being. One of his first decisions led to the establishment on 27 June of the GHQ Advanced Command Group at Suwon under the command of Brigadier General John H. Church, USA. This group had as its primary mission the reorganization of the demoralized ROK forces, which were already reporting thousands of men missing in action. Secondary missions were to keep Tokyo informed as to military developments and expedite the delivery of supplies. As early as 27 June, 119 tons of emergency supplies had been sent to Korea by air, and an additional 5,600 tons were being loaded on ships in Japan.[53] [53] U. S. MilAcad, _op. cit._, 7–8.