American Civil War, Overland Campaign: Battle of Cold Harbor: Ulysses S. Grant gives the Confederate forces under Robert E. Lee a victory when he pulls his Union troops from their position at Cold Harbor, Virginia and moves south.
Pope Pius XII canonises Dominic Savio, who was 14 years old at the time of his death, as a saint, making him at the time the youngest unmartyred saint in the Roman Catholic Church. In 2017 Jacinta and Francisco Marto, aged 10 and 9 at the time of their deaths, are declared saints.
Kosovo War: Operation Joint Guardian begins when a NATO-led United Nations peacekeeping force (KFor) enters the province of Kosovo in Federal Republic of Yugoslavia.
Forty-nine civilians are killed and 58 others injured in an attack on a gay nightclub in Orlando, Florida; the gunman, Omar Mateen, is killed in a gunfight with police.