32 U.S.C. § 506 : US Code - Section 506: Assignment and detail of members of Regular Army or Regular Air Force for instruction of National Guard

Search 32 U.S.C. § 506 : US Code - Section 506: Assignment and detail of members of Regular Army or Regular Air Force for instruction of National Guard

(a) The President shall assign for instruction of the National
Guard such members of the Regular Army or the Regular Air Force as
he considers necessary.
(b) The Secretary of the Army may detail members of the Regular
Army to attend an encampment, maneuver, or other exercise, for
field or coast-defense instruction of the Army National Guard.
Similarly, the Secretary of the Air Force may detail members of the
Regular Air Force to attend exercises for field or coast-defense
instruction of the Air National Guard. Members so detailed shall
instruct the members of the National Guard at the exercise, as
directed by the Secretary concerned, or as requested by the
governor or commanding officer of the National Guard there
assembled.