 At 1 p.m. on November 27 , Peng ordered the PVA 66th Corps to destroy the ROK 1st Infantry Division before the Koreans could retreat to the Ch 'ongch 'on River . On the evening of November 27 , the PVA 66th Corps launched a massive attack against the ROK 1st Infantry Division , the US 5th Regimental Combat Team of the 24th Infantry Division and the US 35th Infantry Regiment . After midnight , the Chinese attacks broke through the Korean lines and captured Yongsan @-@ dong , resulting in the loss of the ROK 11th , 15th and US 35th Infantry Regiment 's command posts . The ROK 11th and 15th Infantry Regiment were soon scattered while the retreating US 35th Infantry Regiment was blocked at Yongsan @-@ dong with Chinese forces attacking from behind . Under heavy pressure , the US 35th Infantry Regiment fought its way through the town and rejoined the US 25th Division on the afternoon of November 28 . At the same time , Paik rallied the broken ROK regiments and recaptured Yongsan @-@ dong . The ROK 1st Infantry Division held the town against the subsequent Chinese attacks until it withdrew from the battle on November 29 . 
