The Fight at Aldie was a small cavalry skirmish between Confederate forces under Major John S. Mosby and Union forces under Major Joseph Gilmore and Captain Franklin T. Huntoon in Aldie, Virginia, on March 2, 1863, as part of Mosby's Operations in Northern Virginia during the American Civil War. The fight which resulted in a Confederate victory was significant in that it was the first action of Mosby's Rangers within their operating territory in the central Loudoun Valley. In the fight Mosby and his men displayed many characteristics that would become their hallmark including the attack on numerically superior force while inflicting disproportionate casualties to those received.