for order to active duty based upon determination by Congress Whenever Congress determines that more units and organizations capable of conducting space operations are needed for the national security than are available among those units comprised of members of the Space Force serving on active duty, members of the Space Force not serving on active duty shall be ordered to active duty and retained as long as so needed. . 1816. Officers (a) Original appointments Subtitle F of title 10, United States Code, as amended by section 1715, is further amended by adding at the end the following new chapter: 2005 Officers Subchapter Sec. I. Original appointments 20201 II. Selection boards 20211 III. Promotions 20231 IV. Persons not considered for promotion and other promotion-related provisions 20241 V. Applicability of other laws 20251 I Original appointments Sec. 20201. Original appointments: how made. 20202. Original appointments: qualifications. 20203. Original appointments: service credit. 20201. Original appointments: how made The provisions of section 531 of this title shall apply to original appointments of commissioned officers in the Space Force. 20202. Original appointments: qualifications (a) In general An original appointment as a commissioned officer in the Space Force may be given only to a person who— (1) is a citizen of the United States