Retired members: limitations; grade

§ 3504. Retired members: limitations; grade (a) The President may order any retired member of the Regular Army to active duty. He may assign a member ordered under this subsection to such duties as he considers necessary in the interests of national defense. (b) When ordered to active duty, a retired commissioned officer of the Army any part of whose service was in the Corps of Engineers is eligible to fill any position required by law to be filled by a commissioned officer of the Corps of Engineers. (c) Whenever any of the following persons is ordered to active duty, he shall be ordered in his retired grade: (1) Any officer who served four years as Chief of the Medical Service Corps. (2) Any officer who served two and one-half years as Chief of the Army Nurse Corps or as Chief or an assistant chief of the Women’s Medical Specialist Corps. (3) Any officer who served two and one-half years as Director or Deputy Director of the Women’s Army Corps.