The American flag is said to have flown in battle for the first
time, during a Revolutionary War skirmish at Cooch’s Bridge,
Delaware.

The rebels were defeated and forced to retreat to General
George Washington’s main force near Brandywine Creek
in Pennsylvania.

July 3, 1863: On the third day of the Battle of Gettysburg,
Confederate General Robert E. Lee’s last attempt at
breaking the Union line ended in disastrous failure,
bringing the most decisive battle of the American Civil
War to an end.

Robert Edward Lee (January 19, 1807 – October 12, 1870)

   
    
    
    
    
   
The Battle of Gettysburg was fought July 1–3, 1863, in and
around the town of Gettysburg, Pennsylvania, during the
American Civil War.

It was one of the war’s most significant engagements, widely
regarded as the turning point that shifted momentum in favor
of the Union.

The epic battle resulted in a retreat to Virginia by Robert E. Lee’s
Army of Northern Virginia.

On June 25, 1876, Native American forces led by Crazy Horse
and Sitting Bull defeated the U.S. Army troops of Lt. Col. 
George Armstrong Custer in the Battle of the Little Bighorn
near southern Montana’s Little Bighorn River.

During World War II, the U.S. 10th Army overcame the last major
pockets of Japanese resistance on the island of Okinawa, ending
one of the bloodiest battles of World War II.

The same day, Japanese Lieutenant General Mitsuru Ushijima,
the commander of Okinawa’s defense, committed suicide with
a number of Japanese officers and troops rather than surrender.