The road makes a sharp turn 2½ miles southwest of Paedun-ni to climb through Taedabok Pass, a defile about 1,000 yards long. Just beyond, at the village of Pugok, a sharp turn to the left skirts the base of a large hill overlooking the entire length of the pass. The first jeep of the reconnaissance detachment was almost abreast of Pugok at 1500 when NKPA machineguns opened up from the big hill at the bend. Enemy automatic weapons on the high ground above the pass raked the vehicles filled with Dog Company men. As the Marines were taking cover in roadside ditches, a Communist antitank gun opened fire from the large hill and hit one of the jeeps. The reconnaissance troops gradually withdrew from their exposed positions and fell back on Zimmer’s group. After sizing up the situation, the Company D commander ordered his 1st Platoon to seize the high ground on the right side of the road about midway through the pass. No resistance was met, so that the Marines set up their weapons quickly and returned the Communist fire. Meanwhile the 2d Platoon moved up on the right after clearing small enemy groups from the high ground on both sides of the road at the entrance to the defile. Zimmer had spotted the location of the enemy’s antitank gun, and Marine 60-mm. fire put an end to this nuisance. The effort used up all the mortar ammunition, and the Company D commander decided to wait in position for Brigade supporting arms. Two tanks arrived at 1630, and their 90-mm. guns drove the enemy into hiding. While Marine tanks and air were working over the hill, 3/5 reached Paedun-ni after being relieved of its final security mission in the Chindong-ni area. Murray ordered Taplett to be prepared to pass through 2/5 and continue the attack. The 3d Battalion reached the entrance to Taedabok Pass in trucks shortly after the arrival of the 2d Battalion troops who had followed their motorized column on foot. Some confusion resulted on the narrow road after Murray’s arrival while he waited to confer with Taplett. Unable to find Roise, the two officers climbed the high ground on the left. From this vantage point they could see Kosong, 5 miles away. The regimental commander ordered Taplett to pass through 2/5 immediately and continue the attack. Company G had already crossed the line of departure and was deploying to assault the hill at the road bend when Murray located Roise in Zimmer’s area to the right of the road. The exact location of enemy positions remained in some doubt. In order to clear up the uncertainty, Major McNeely volunteered to lead out a patrol. About 1730, therefore, Roise’s S/3 took off in a jeep with a radio operator and a fire team from Dog Company.