A commission is created, to be composed of the following members, who shall be appointed by the Secretary of the Interior:

(1) A commissioned officer of the Corps of Engineers, United States Army;

(2) A veteran of the Civil War who served honorably in the military forces of the United States; and

(3) A veteran of the Civil War who served honorably in the military forces of the Confederate States of America.

(Mar. 3, 1927, ch. 374, § 1, 44 Stat. 1399; Ex. Ord. No. 6166, § 2, June 10, 1933; Ex. Ord. No. 6228, § 1, July 28, 1933; Pub. L. 86–443, §§ 2, 3, Apr. 22, 1960, 74 Stat. 82.)