Code of Federal Regulations Title 20. Employees' Benefits § 20.404.1312 World War II service included

(1) On active commissioned service during the period beginning September 16, 1940, through July 28, 1945, and the active service was done while on detail to the Army, Navy, Marine Corps, or Coast Guard;  or

(2) On active commissioned service during the period beginning July 29, 1945, through July 24, 1947, regardless of whether on detail to the Army, Navy, Marine Corps, or Coast Guard;

(1) During the World War II period—

(2) On active service in the Philippine Islands on December 7, 1941;  or

(3) On active service during the period beginning July 29, 1945, through July 24, 1947;

(1) Had entered into that active service before December 9, 1941;

(2) Were a citizen of the United States throughout that period of active service or lost your United States citizenship solely because of your entrance into that service;

(3) Had resided in the United States for a total of four years during the five-year period ending on the day you entered that active service;  and

(4) Were domiciled in the United States on that day;  or