 As the battle around Taechon dragged into the night of November 26 , the ROK 11th Infantry Regiment on the division 's right became disorganized . Brigadier General Paik Sun Yup of the ROK 1st Infantry Division soon brought up the 15th Infantry Regiment from his reserve to relieve the 11th Infantry Regiment . After receiving news on the Chinese attack against the 25th Division across the Kuryong River , Paik had also directed his division to defend against the upcoming Chinese counteroffensive . As the morning came on November 27 , the Chinese troops around Taechon did not stop their assault even under punishing UN air strikes , and some of the attacks spilled into US 24th Infantry Division 's area . Upon noticing their flank was buckling , the US 24th Infantry Division and the US 35th Infantry Regiment started the retreat southward to the Ch 'ongch 'on River . 
