July in Military History
Independence Day, the Battle of Gettysburg, and the first nuclear test, July shaped the course of American military power.
332 events across 31 days
Featured Events in July

July 4
Declaration of Independence Adopted
1776

July 17
Potsdam Conference Opens
1945

July 18
54th Massachusetts Storms Fort Wagner
1863
July 19
Franco-Prussian War Begins
France declares war on the Kingdom of Prussia, beginning the conflict that would lead to the fall of the French Second Empire, the unification of Germany, and the territorial grievances that fueled both World Wars.
July 20
Apollo 11 Lands on the Moon
At 4:17 PM EDT, the Apollo 11 lunar module Eagle lands on the Moon's Sea of Tranquility, with former Navy pilot Neil Armstrong and Air Force Colonel Buzz Aldrin becoming the first humans to walk on another world, the ultimate triumph of the Cold War space race.
Every Day in July
First Day of the Battle of the Somme
10 events · 1916
Second Day at Gettysburg
10 events · 1863
Pickett's Charge at Gettysburg
10 events · 1863
Declaration of Independence Adopted
24 events · 1776
Battle of Kursk Begins
10 events · 1943
Liberation of the Philippines Medal of Honor
10 events · 1945
Marco Polo Bridge Incident
10 events · 1937
MacArthur Named UN Commander in Korea
10 events · 1950
Battle of Saipan Ends
10 events · 1944
Allied Invasion of Sicily
10 events · 1943
Burr-Hamilton Duel
10 events · 1804
Battle of Prokhorovka, Largest Tank Battle in History
10 events · 1943
New York City Draft Riots
10 events · 1863
Storming of the Bastille
10 events · 1789
Second Battle of the Marne Begins
10 events · 1918
Trinity Test, First Nuclear Detonation
10 events · 1945
Potsdam Conference Opens
11 events · 1945
54th Massachusetts Storms Fort Wagner
11 events · 1863
Franco-Prussian War Begins
11 events · 1870
Apollo 11 Lands on the Moon
11 events · 1969
First Battle of Bull Run
11 events · 1861
Battle of Atlanta
11 events · 1864
Austria-Hungary Issues Ultimatum to Serbia
11 events · 1914
Operation Gomorrah, Firebombing of Hamburg
11 events · 1943
Operation Cobra, The Breakout from Normandy
10 events · 1944
Executive Order 9981, Truman Desegregates the Armed Forces
10 events · 1948
Korean War Armistice Signed at Panmunjom
10 events · 1953
Austria-Hungary Declares War on Serbia, World War I Begins
10 events · 1914
Catastrophic Fire Aboard USS Forrestal
10 events · 1967
USS Indianapolis Torpedoed, Worst Naval Disaster in U.S. History
10 events · 1945
Third Battle of Ypres (Passchendaele) Begins
10 events · 1917
Notable Military Figures Born in July
July 1
Charles Cornwallis
Major General
British general whose surrender at Yorktown in 1781 effectively ended the American Revolutionary War. Despite this famous defeat, he later served as Governor-General of India and Viceroy of Ireland.
1738–1805
July 1
William Barton
Colonel
Continental Army officer who captured British Major General Richard Prescott in a daring nighttime raid in 1777, earning a promotion and a sword from Congress.
1748–1831
July 2
Thurgood Marshall
Civilian
First African American Supreme Court Justice. As chief counsel for the NAACP, he argued cases that desegregated military installations and paved the way for racial integration of the armed forces.
1908–1993
July 2
Patton Oswalt
Civilian
While not a military figure himself, this date also marks the birth of numerous military personnel throughout history who served their nations.
1969–present
July 3
John Barry
Commodore
Often called the "Father of the American Navy," Barry commanded the first Continental Navy ship to capture a British warship and later became the first commissioned officer of the United States Navy under the Constitution.
1745–1803
July 3
George M. Dallas
Vice President / Commander-in-Chief (acting)
Vice President under James K. Polk during the Mexican-American War. The city of Dallas, Texas, is believed to be named in his honor.
1792–1864
July 4
Nathaniel Hawthorne
American novelist and author of The Scarlet Letter and The House of the Seven Gables. A close friend of President Franklin Pierce, Hawthorne wrote Pierce's campaign biography and served as U.S. Consul to Liverpool. His writings explored themes of guilt, sin, and moral ambiguity that resonated with the deepening crisis over slavery that led to the Civil War.
1804–1864
July 4
Calvin Coolidge
Commander in Chief
The 30th President of the United States (1923-1929), the only president born on Independence Day. Coolidge oversaw a period of relative peace and prosperity between the world wars, signed the Kellogg-Briand Pact outlawing war in 1928, and maintained a policy of military restraint, though the underfunding of defense during his administration left the U.S. unprepared for the conflicts to come.
1872–1933
July 5
David Farragut
Admiral
First admiral in U.S. Navy history, famous for his command at the Battle of Mobile Bay where he issued the legendary order "Damn the torpedoes! Full speed ahead!" Also captured New Orleans in 1862.
1801–1870
July 5
P.T. Barnum
Civilian
While known as a showman, Barnum served in the Connecticut legislature during the Civil War and was a vocal Union supporter. His Bridgeport factories supplied military equipment.
1810–1891
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About July in Military History
July has witnessed 332 significant military events spanning from the American Revolution to the modern era. Each day of July carries its own story of battles, innovations, sacrifices, and turning points that shaped the course of military history.
Our day-by-day coverage includes detailed narratives, historical context, images from military archives, and connections to our broader library of military history articles. Whether you're researching a specific date or browsing for fascinating stories, July has no shortage of compelling military history.