The Battle of the Soyang River, also referred to as the "May Massacre", was fought during the Korean War between United Nations Command (UN) and the Chinese People's Volunteer Army (PVA) and Korean People's Army (KPA) during the Spring Offensive of April–May 1951. The attack took place across the entire front but with the main thrust below the Soyang River in the Taebaek Mountains. The objective of the main effort was to sever the six Republic of Korea Army (ROK) divisions on the eastern front from the remainder of the US Eighth Army and annihilate them and the US 2nd Infantry Division. Secondary attacks would be mounted by PVA and KPA forces across the entire front.