Your service was in the active service of the United States during the post-World War II period if you were in the -
(a) Air Force, Army, Navy, Marine Corps, Coast Guard, or any part of them;
(b) Commissioned corps of the United States Public Health Service and were on active service during that period;
(c) Commissioned corps of the United States Coast and Geodetic Survey and were on active service during that period; or
(d) Philippine Scouts and performed active service during the post-World War II period under the direct supervision of recognized military authority.