The Virginia Line was a formation within the Continental Army. The term "Virginia Line" referred to the quota of numbered infantry regiments assigned to Virginia at various times by the Continental Congress. These, together with similar contingents from the other twelve states, formed the Continental Line. The concept was particularly important in relation to the promotion of commissioned officers. Officers of the Continental Army below the rank of brigadier general were ordinarily ineligible for promotion except in the line of their own state.
Not all Continental infantry regiments raised in a state were part of a state quota, however. On December 27, 1776, the Continental Congress gave Washington temporary control over certain military decisions that the Congress ordinarily regarded as its own prerogative. These “dictatorial powers” included the authority to raise sixteen additional Continental infantry regiments at large. Early in 1777, Washington offered command of one of these additional regiments to Nathaniel Gist of Virginia, who accepted. He also offered command of an additional regiment to William Grayson of Virginia, who accepted. In 1776, Grayson had served as one of Washington’s personal aides. Finally, Washington offered command of an additional regiment to Charles Mynn Thruston of Virginia, who accepted.
Still other Continental infantry regiments and smaller units, also unrelated to a state quota, were raised as needed for special or temporary service. The independent companies raised by Virginia in 1777 to garrison Fort Pitt and Fort Randolph were examples of such “extra” units.
In August 1775 the Virginia Convention voted to raise fifteen companies to serve one year. The companies were raised in the fall of 1775 and organized into two regiments. The Continental Congress resolved, on November 1, 1775, to place these two regiments on the Continental establishment. The regiments were designated the 1st and 2d Virginia Regiments.
On December 28, 1775, the Continental Congress voted to raise four more regiments in Virginia. The Virginia Convention concurred on January 11, 1776. The Convention ordered that an additional 72 companies be raised and that the term of service of the original fifteen companies be extended. The 87 companies were to be organized into nine regiments of ten companies each (the 9th Virginia Regiment having at first only seven companies). The new force was to serve for not exceeding two and a half years. The 1st and 2d Virginia Regiments were reconstituted; the 3d through 6th Virginia Regiments were raised as Continental regiments; and the 7th through 9th Virginia Regiments were raised as state troops. In the course of 1776 the state regiments were placed on the Continental establishment.