During the French and Indian War, from 1754 to 1763, a milita was formed in Prince William County, Virginia, which served as a prerequisite for troop readiness in a later war.
In 1774, Prince William County, Virginia formed a volunteer group of infantrymen, called the Independent Company of Prince William, which was formed under the command of Captains Philip Richard Francis Lee and William Grayson due to the anticipated conflict with Britain. In 1776, regents of the militia became known as the Prince William District Battalion.
Hamilton Historical Records 