Question: The Battle of Chosin Reservoir and Battle of the Ch'ongch'on River where part of which war?
Sentence (from "Battle of Chosin Reservoir"): The Battle of Chosin Reservoir, also known as the Chosin Reservoir Campaign or the Changjin Lake Campaign (Korean: 장진호 전투 ; hanja: 長津湖戰鬪; rr: "Jangjin ho jeontu"; ), was a decisive battle in the Korean War.
Relevant evidence: Yes