Crisis in Venezuela: Seven people are injured when two drones detonate explosives on Avenida Bolívar, Caracas while president Nicolás Maduro is giving a speech to the Venezuelan National Guard.
Operation Storm, the last major battle of the Croatian War of Independence begins.
Jean-Baptiste Ouédraogo, president of the military government of Upper Volta, is ousted from power in a coup d'état led by Captain Thomas Sankara.
U.S. President Jimmy Carter signs legislation creating the United States Department of Energy.
Ugandan President Idi Amin announces that Uganda is no longer responsible for the care of British subjects of Asian origin, beginning the expulsions of Ugandan Asians.
Under the state of emergency law, the Finnish Parliament elects Marshal C. G. E. Mannerheim as the President of Finland to replace the resigned Risto Ryti.
Diplomatic relations between Mexico and the Soviet Union are established.
Bolshevik–Makhnovist conflict: Mikhail Frunze declares victory over the Makhnovshchina.
World War I: The German 12th Army occupies Warsaw during the Gorlice–Tarnów Offensive and the Great Retreat of 1915.
World War I: In response to the German invasion of Belgium, Belgium and the British Empire declare war on Germany. The United States declares its neutrality.
American Indian Wars: While protecting a railroad survey party in Montana, the United States 7th Cavalry, under Lieutenant Colonel George Armstrong Custer clashes for the first time with the Cheyenne and Lakota people near the Tongue River; only one...
The Saturday Evening Post is published for the first time as a weekly newspaper.
French Revolutionary Wars: Napoleon leads the French Army of Italy to victory in the Battle of Lonato.
The Treaty of Sistova is signed, ending the Ottoman–Habsburg wars.
Fourth Anglo-Dutch War, a fleet of six East India Company ships sets sail from Fort Marlborough to raid the Dutch VOC factories on the West coast of Sumatra including the major port of Padang.
Great Peace of Montreal between New France and First Nations is signed.
Date traditionally ascribed to Dom Perignon's invention of champagne; it is not clear whether he actually invented champagne, however he has been credited as an innovator who developed the techniques used to perfect sparkling wine.
First War of Scottish Independence: James Douglas leads a raid into Weardale and almost kills Edward III of England.