The expression “colony” in the M1Army Act 1955, the M2Air Force Act 1955 and the M3Naval Discipline Act 1957 shall not include Belize; and in the definitions of “Commonwealth force” in section 225(1) and 223(1) respectively of those Acts of 1955, and in the definition of “Commonwealth country” in section 135(1) of that Act of 1957, at the end there shall be added the words “or Belize”.