On what date did XXX end?
First Battle of Maryang San
The First Battle of Maryang San (3--8 October 1951), also known as the Defensive Battle of Maliangshan (Chinese: 马良山防御战; pinyin: Mǎliáng Shān Fángyù Zhàn), was fought during the Korean War between United Nations (UN) forces--primarily Australian and British--and the Chinese communist People's Volunteer Army.
8 October 1951