Major General Alfred Pleasonton commanded the Union's cavalry corps at the Battle of Gettysburg. His cavalry commanders helped to win the Battle of Gettysburg for the Union.

The cavalry forces of both sides played an important role at the Battle of Gettysburg. Arguable the most significant day of the battle for the cavalry was July 3,1863. Important cavalry clashes occurred at Brinkerhoff's Ridge, Cress's Ridge and the Rummel farm.

On July 3, 1863, a large scale cavalry battle was fought four miles east of Gettysburg. There Union cavalry under Brigadier General David M. Gregg fought with the cavalry of Confederate Major General JEB Stuart. It is debatable, however, that Gregg's ability to hold off Stuart's assault was a significant key to the outcome of the Battle of Gettysburg.

General Alfred Pleasonton led the Union's Cavalry Corps under General Meade at the US Civil War Battle of Gettysburg. His commanders helped to protect the Union's flank on the last day of the battle.

Pickett's Charge, on the third day of the Battle of Gettysburg.