As the two assault companies reorganized on the newly won ridge, Fenton spotted a large number of Red troops on Hill 80, now about 1,000 yards away. He directed an air strike from his advance position, and the Corsairs not only cut down many of the North Koreans but completely routed the survivors. While the planes worked over the enemy positions on the high ground, the Marines of Company B observed a growing throng of NKPA soldiers in the vicinity of the Kalchon Bridge leading to Yongdungpo. Some of the Reds were milling around, but others were filing across the undamaged span and disappearing into a knot of warehouses and huts at the far end. Fenton radioed for artillery fire just as Communist machine guns and an AT weapon opened up on Baker Company from positions across the bridge. Four times firing for effect with “battery four rounds,” the Marine howitzers sent a total of 96 shells crashing into the enemy positions within the space of a few minutes. The explosions neutralized the bridge area, but the span itself was badly damaged in the process.[320] [320] Maj F. I. Fenton, Jr., memo to authors, 1 Jun 55. First Lieutenant Pedersen led Company C along the highway toward Hills 80 and 85 at 1430. Owing to the press of time, the area between the road and the Han River was not cleared, with the result that small bands of enemy were left free to roam the fields and make their presence felt later. The 3d Platoon, under Second Lieutenant Harold L. Dawe, Jr., peeled off the column and attacked Hill 80 shortly after 1500. Following at an interval of 500 yards, Second Lieutenant Robert H. Corbet’s 1st Platoon continued along the pavement toward Hill 85. A platoon of A/Tanks supported the two-pronged assault along with Charlie Company’s mortars and machine guns, and by 1650 the two heights were secured. In the wake of the air strike called down by Fenton, the attacking infantry had encountered practically no opposition. Yongdungpo, bristling with Communist armament, rumbled its challenge from the low ground 500 yards east of Hill 85. Taken under heavy fire by artillery, mortars, and small arms, Company C was forced to dig in on the reverse slopes of its high ground, there to await the expected counterattack after nightfall. _Enemy Minefields Encountered_ As noted previously, the 2d and 3d Battalions, 1st Marines, spent the night of 18–19 September astride the Inchon-Seoul Highway a mile east of Sosa. The 1st Battalion, deployed over a broad front in the hills south of the road, was to be relieved in the morning by the 32d Infantry, so that Colonel Puller could shift his regiment to the left. Since the relief did not take place as early as expected, Puller ordered his 2d and 3d Battalions to attack at 1030, leaving 1/1 in position to await replacement by the Army unit.[321] [321] 1st MarDiv _SAR_, Annex Peter Peter.