Section 18. (a) The adjutant general, upon recommendation of the commanding officer of a federally recognized infantry division may order to active duty three officers to serve in the division headquarters. When so ordered to duty, such officers shall perform such duties appropriate to their positions as may be assigned by the commanding officer and shall receive the same pay as an officer of the regular service of corresponding grade with corresponding length of service but not exceeding the pay of a colonel, lieutenant colonel and major, respectively. To be eligible for duty as aforesaid, such officers shall have federal recognition for both their grade and position.
[There is no subsection (b).]