American Civil War: George B. McClellan assumes command of the Army of the Potomac following a disastrous Union defeat at the First Battle of Bull Run.
World War II: In response to the Japanese occupation of French Indochina, US President Franklin D. Roosevelt orders the seizure of all Japanese assets in the United States.
Cold War: U.S. President Harry S. Truman signs the National Security Act of 1947 into United States law creating the Central Intelligence Agency, United States Department of Defense, United States Air Force, Joint Chiefs of Staff, and the United States National Security Council.
Vietnam War: South Vietnamese opposition leader Trương Đình Dzu is sentenced to five years hard labor for advocating the formation of a coalition government as a way to move toward an end to the war.
Hillary Clinton becomes the first female nominee for President of the United States by a major political party at the Democratic National Convention in Philadelphia.