 After an extensive refit in the aftermath of the Unsan battle , ROK 1st Infantry Division was placed on the US I Corps right flank at Yongsan @-@ dong on November 20 . As part of the Home @-@ by @-@ Christmas Offensive , the ROK 1st Infantry Division was to advance north and to capture the town of Taechon while the US 35th Infantry Regiment of the US 25th Infantry Division was advancing north from Yongsan @-@ dong on the Korean right flank . At the same time , the US 24th Infantry Division of the US I Corps would advance towards Chongju on the ROK 1st Infantry Division 's left flank . 
