 The Battle of the Ch 'ongch 'on River , also known as the Battle of the Ch 'ongch 'on or the Second Phase Campaign Western Sector ( Chinese : 第二次战役西线 ; pinyin : Dì Èr Cì Zhàn Yì Xī Xiàn ) , was a decisive battle in the Korean War , and it took place from November 25 to December 2 in 1950 , along the Ch 'ongch 'on River Valley in the northwestern part of North Korea . In response to the successful Chinese First Phase Campaign against the United Nations forces , General Douglas MacArthur launched the Home @-@ by @-@ Christmas Offensive to evict the Chinese forces from Korea and to end the war . Anticipating this reaction , the Chinese People 's Volunteer Army Commander Peng Dehuai planned a counteroffensive , dubbed the " Second Phase Campaign " , against the advancing UN forces . 
