清川江
"In the western half of North Korea, as part of the U.S. I Corps' general advance on October 25, 1950, the 1st Division was spread out on the road that ran from the Chongchon River to Unsan. The division's 15th Regiment passed through Yongbyon and continued toward Unsan without opposition. In the lead were elements of Company D, 6th Medium Tank Battalion, which also passed through Unsan without incident. Just before 1100, as the tanks approached a bridge one and a half miles northeast of the town, enemy mortar fire destroyed the bridge. Engaging the enemy force, the soldiers reported a half-hour later that at least three hundred Chinese troops were in the hills just north of Unsan. The 12th Regiment, the second division unit in the column, turned west when it arrived at Unsan, and also ran into Chinese forces just beyond the town. The CCF's attacks against the 1st Division continued on the twenty-sixth but eased up the following day."