“Active conduct of and/or fighting in the Korean Campaign” shall mean service by any man or woman of the armed forces of the United States between June 27, 1950, and January 31, 1955, inclusive. Provided, however, that the extension of the date from July 27, 1953, to January 31, 1955, in the definition of Korean service shall not entitle any veteran who served between July 27, 1953, to January 31, 1955, to any bonus previously paid, nor to any veteran’s tax exemption pursuant to § 44-3-4.