American Revolutionary War: Battle of Valcour Island: On Lake Champlain a fleet of American boats is defeated by the Royal Navy, but delays the British advance until 1777.
American Civil War: In the aftermath of the Battle of Antietam, Confederate General J. E. B. Stuart and his men loot Chambersburg, Pennsylvania, during a raid into the north.
San Francisco public school board sparks a diplomatic crisis between the United States and Japan by ordering Japanese students to be taught in racially segregated schools.
Former President Theodore Roosevelt becomes the first U.S. president to fly in an airplane. He flew for four minutes with Arch Hoxsey in a plane built by the Wright brothers at Kinloch Field (Lambert-St. Louis International Airport), St. Louis, Missouri.
World War II: Battle of Cape Esperance: On the northwest coast of Guadalcanal, United States Navy ships intercept and defeat a Japanese fleet on their way to reinforce troops on the island.
George Washington's appointment, posthumously, to the grade of General of the Armies by congressional joint resolution Public Law 94-479 is approved by President Gerald R. Ford.
Cold War: U.S. President Ronald Reagan and Soviet leader Mikhail Gorbachev meet in Reykjavík, Iceland, in an effort to continue discussions about scaling back their intermediate missile arsenals in Europe.