REDS OPEN ATTACK ALONG KOREA LINE; PUSH ALLIES BACK; U.N. ADVANCE IS HIT Foe Forces Withdrawal While Crossing Imjin on 15-Mile Front GAP IN CENTER IS CLOSED Observers Uncertain if Action by Communists Is Start of the Expected Counter-Blow Hand-to-Hand Combat Favorite Tactics Repeated REDS OPEN ATTACK ALONG KOREA LINE Unit Moves 3 to 5 Miles Red Entrenchments Hit
enemy launches strong attacks along 50-mi front from Imjin River to Hwachon area; forces withdrawal of UN forces; hand-to-hand combat reptd along most of front; UN unit with air support gains 3-5 mi below Kumhwa; planes hit enemy concentrations S of Kumhwa