The form of absentee ballot application provided by any federal department or agency, referred to in § 9-140, may be used only by a person in any one of the following categories who is eligible to vote and who expects to be unable to appear at his proper polling place for any reason specified in § 9-135: (1) Members of the armed forces, (2) the spouses and dependents of such members, (3) members of religious groups or welfare agencies assisting members of the armed forces, who are officially attached to and serving with the armed forces, and their spouses and dependents, (4) civilian employees of the United States in all categories serving outside the territorial limits of the several states of the United States and the District of Columbia and their spouses and dependents when residing with or accompanying them, whether or not the employee is subject to the civil service laws and the Federal Classification Act of 1949, and whether or not paid from funds appropriated by the Congress, (5) citizens of the United States temporarily residing outside of the territorial limits of the several states of the United States and the District of Columbia and (6) overseas citizens qualified to vote under the Uniformed and Overseas Citizens Absentee Voting Act, 100 Stat. 924, 42 USC 1973ff et seq., as amended from time to time. Any such person may apply for an absentee ballot in the manner provided in said § 9-140, either on the form prescribed by the Secretary of the State under said section, or on the application form provided by any federal department or agency hereinbefore referred to.