Saturday will mark the 60th anniversary of the cease-fire that ended the fighting of the Korean War.
North Korea is marking the milestone with a massive celebration, calling it "Victory Day."
In America, the U.S.-Korea Institute held a congressional event to honor Korean War veterans.
Former Sen. John Warner, R-Va., served in the U.S. Marine Corp. during the conflict. He recalled how the United States was quickly downsizing the military after World War II when this new war erupted.
The former Virginia lawmaker told the audience on Capitol Hill that it taught America an important lesson.
"We had no thought that the U.S. would be called upon so quickly to respond to a noble cause and that was to preserve freedom for South Korea," Warner said.
"We learned a lesson as a nation, never again to allow our defenses to slip below that level of the commitments we have, not only to ourselves to protect freedom, but indeed those other allies and other freedom-seeking people of the world," he continued.
The Korean War is not technically over since the two sides only signed a truce and have yet to negotiate a peace treaty. Today the Demilitarized Zone between North and South Korea remains the world's most fortified border.