June 28 -- Invaders capture Seoul, southern capital.
July 5 -- First U.S. troops join battle, are driven back.
Aug. 4 -- South Korean and U.S. troops, organized as U.N. Command, withdraw into Pusan Perimeter defense line.
Sept. 15-22 -- U.S. troops come ashore far behind North Korean lines at Inchon. Pusan Perimeter forces push north to join them.
Sept. 27 -- U.N. forces recapture Seoul.
Oct. 19 -- U.N. forces capture Pyongyang, northern capital.
Oct. 25 -- Chinese army attacks U.N. Command in North Korea.
Nov. 7-Dec. 9 -- In east, U.S. Marines encircled at Chosin Reservoir fight way to sea and later evacuation. In west, U.S. Army's 2nd and 25th divisions are battered.