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Late in the afternoon of 4 September, the 9th Infantry moved into positions on the high ground northeast of 3/5. This completed the advance to Phase Line One of the 2d Division’s counterattack plan. The second phase line on G–3 maps was drawn through Hill 125 and Observation Hill, 3,000 yards west of Kang-ni.
When informed that the Brigade had completed the first part of its mission, General Keiser authorized General Craig to advance toward Phase Line Two. Beyond Kang-ni, the Brigade’s right boundary became the MSR, so that 3/5 could not advance westward from its half of Objective One. Major Charles H. Brush, Murray’s S–3, radioed Newton and passed on orders for the battalion commander to take the next piece of high ground, Cloverleaf Hill, just south of the MSR at Hwayong-ni, about a thousand yards away.
The 1st Battalion struck out through the intervening rice paddy, Company A on the left and Baker Company just below the MSR. Fenton’s unit had hardly begun the advance when it was stopped by heavy machinegun fire coming from the high ground north of Hwayong-ni. Newton then called for an air strike on the ridge and also requested 3/5 to keep it covered with supporting fire during Company B’s attack.