Confederate guerrilla Bloody Bill Anderson and his henchmen, including a teenage Jesse James, massacre 20 unarmed Union soldiers at Centralia, Missouri. The event becomes known as the Centralia Massacre.
Wild Bill Hickok, sheriff of Hays City, Kan., shoots down Samuel Strawhim, a drunken teamster causing trouble.
Thousands of British troops are killed as German forces rebuff their massive effort to capture the Arnhem Bridge across the Rhine River in Holland.
The U.S. Air Force Bell X-2, the world's fastest and highest-flying plane, crashes, killing the test pilot.
The Warren Commission, investigating the assassination of President John F. Kennedy, issues its report, stating its conclusion that Lee Harvey Oswald was the sole gunman.
Sukhumi massacre: Abkhaz separatist forces and their allies commit widespread atrocities against the civilian population in the USSR state of Georgia.
NASA launches Dawn probe to explore and study the two larges objects of the asteroid belt, Vesta and Ceres.