Members of the Army National Guard of the United States ordered to active duty shall be ordered to duty as Reserves of the Army. Members of the Air National Guard of the United States ordered to active duty shall be ordered to duty as Reserves of the Air Force.
Structure US Code
Subtitle E— Reserve Components
CHAPTER 1211— NATIONAL GUARD MEMBERS IN FEDERAL SERVICE
§ 12401. Army and Air National Guard of the United States: status
§ 12404. Army and Air National Guard of the United States: mobilization; maintenance of organization
§ 12405. National Guard in Federal service: status
§ 12406. National Guard in Federal service: call
§ 12407. National Guard in Federal service: period of service; apportionment
§ 12408. National Guard in Federal service: physical examination