North Korea invades South Korea with 135,000 men, initiating the Korean War.
Destroyers USS Mansfield and USS De Haven help evacuate 700 Americans and friendly foreign nationals from Inchon, South Korea.
33 officers and men of Detachment X of the 507th Antiaircraft Artillery Battalion deploy from Japan to protect Suwon Airfield. They are the first U.S. ground troops in Korea.
Near Samchock, South Korea, light cruiser USS Juneau conducts the first naval gunfire mission of the war.