Memorial Day: The remains of two unidentified American servicemen, killed in action during World War II and the Korean War respectively, are buried at the Tomb of the Unknown Soldier in Arlington National Cemetery.

The Korean War was an armed conflict on the Korean Peninsula fought between North Korea and South Korea and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations Command (UNC) led by the United States. The conflict was one of the first major proxy wars of the Cold War. Fighting ended in 1953 with an armistice but no peace treaty, leading to the ongoing Korean conflict.

The Tomb of the Unknown Soldier at Arlington National Cemetery in Arlington County, Virginia, United States is the burial site of a World War I soldier whose remains were unidentifiable. After a design competition was held in 1928, the winning project was completed in 1932. The site now also includes the gravesites of two other unknowns, one from World War II and one from the Korean War, who were buried under two slabs between it and the Memorial Amphitheater behind it.

Arlington National Cemetery is the largest cemetery in the United States National Cemetery System, one of two maintained by the United States Army. More than 400,000 people are buried in its 639 acres in Arlington County, Virginia.