On July 3

In Arizona, the Boundary Fire (pictured) burned out after 32 days, burning 17,788 acres (7,199 ha) of the Coconino and Kaibab National Forests.

General Abdel Fattah el-Sisi led a coalition to depose President Mohamed Morsi in a coup d'état in Cairo, suspending the Egyptian Constitution of 2012.

Same-sex marriage became legal in Spain with the coming into effect of a law passed by the Cortes Generales.

The US Navy warship Vincennes shot down Iran Air Flight 655 over the Persian Gulf, killing all 290 people aboard.

US president Jimmy Carter signed a presidential finding, authorizing covert operations to aid the mujahideen against the Soviet-backed Democratic Republic of Afghanistan.

British singer David Bowie retired his stage persona Ziggy Stardust in a surprise announcement on the last day of a 17-month tour.

The Troubles: The British Army began the Falls Curfew in Belfast, Northern Ireland, which resulted in greater Irish republican resistance.

Dan-Air Flight 1903 crashed into the slopes of the Montseny Massif in Catalonia, Spain, killing all 112 people aboard.

SS United States (pictured) departed New York Harbor on her maiden voyage, on which completion she became the fastest ocean liner to cross the Atlantic.

Second World War: The Royal Navy attacked the French fleet at Mers El Kébir (pictured), fearing that the ships would fall into Axis hands after the French–German armistice.

On the 75th anniversary of the end of the Battle of Gettysburg, U.S. President Franklin D. Roosevelt dedicated the Eternal Light Peace Memorial.

Confederate forces were defeated by the Union Army on the last day of the Battle of Gettysburg (pictured), a turning point in the American Civil War.

Mauritius campaign of 1809–1811: A French frigate squadron under Guy-Victor Duperré defeated a convoy of three British East Indiamen near the Comoro Islands.

American Revolutionary War: Loyalists and Iroquois killed over 300 Patriots at the Battle of Wyoming in Pennsylvania.

French and Indian War: George Washington surrendered Fort Necessity in Pennsylvania, the only military surrender in his career.

Civil wars of the Tetrarchy: Roman emperor Constantine the Great defeated his former colleague Licinius at the Battle of Adrianople.