Timeline of the Korean War

By Bejorth

  • North Korea Crosses Border

    North Korean forces cross border with South Korea. North Korean People's Army numbers approximately 135,000 men Republic of Korea Army contains 98,000 soldiers.
  • Period: to

    Phase 1

  • North Korea captures Seoul

  • US Arrives in Korea

    First U.S. ground combat troops, Task Force Smith, arrive in Korea.

  • Inchon falls to the NKPA.

  • Task Force Smith Engages

    Task Force Smith engages and delays advancing NKPA forces at Osan in first U.S. ground action of the war.
  • Period: to

    21st Infantry stalls NKPA advances at Chochiwon

  • Period: to

    21st Infantry and 1st Cavarly Divisions begin movement

    25th Infantry and 1st Cavalry Divisions begin movement to Korea from Japan; 29th Regimental combat team sails from Okinawa for Korea 2d Infantry division prepares to embark from Seattle.

  • 24th Infantry Division begins defense of Taejon.

  • Taejon is captured by NKPA 24th Infantry 25th Infantry Division captures Yechon.

  • 5th Regimental Combat Team arrives in Korea from Hawaii

  • Period: to

    Second Battle of the Naktong Buldge

  • U.S. X Corps

    U.S. X Corps, with the 1st Marine Division, in the lead, conducts amphibious landing at Inchon.

  • U.S. Eighth Army

    U.S. Eighth Army begins its offensive northward out of the Pusan Perimeter.
  • Period: to

    Phase 2

  • ROK I Corps captures the major port of Wonsan.