Va. Code § 20-30
The clerks of the circuit courts of any counties or their deputies and the clerks of the circuit courts of any cities or their deputies are authorized to issue marriage licenses in conformity with the law now governing the same, to any persons desiring to be married on any of the government reservations of this Commonwealth, lying within their respective counties and which reservations were before the acquisition thereof part of the political territory of this Commonwealth, and any marriage ceremony performed on such reservations shall be as legal to all intents and purposes as if performed in any county or city of the Commonwealth, if the person performing the ceremony was qualified to so act.
All marriages heretofore solemnized within the limits of any such reservations are hereby ratified and legalized to all intents and purposes as if performed in any county or city of the Commonwealth.
Va. Code § 20-30