| 1950 |
| June 25 |
North Korea invades the South. |
| June 26 |
UN passes a vote to stop the North's invasion. |
| June 27 |
US commands the Far East Navy and Air Force to support the South. |
| July 20 |
Occupation of Daejeon. |
| August 1 |
EUSA Commander orders withdrawal to Nakdong River defense line. |
| September 15 |
Incheon Landing Operations. |
| September 28 |
The South reclaims Seoul. |
| October 1 |
ROK Army advances north past the 38th Parallel. |
| October 19 |
ROK Army and the UN forces captures Pyeongyang. |
| October 25 |
Chinese Army's first invasion. |
| December 14~24 |
ROK Army and UN forces in Heungnam Retreat Operation. |