Every bona fide permanent resident of the State of Alabama who has served 90 days or more in the Armed Forces of the United States between September 16, 1940, and the termination of World War II by the signing of a definitive treaty of peace or at any subsequent time when the United States was, is or shall be engaged in hostilities with any foreign state, whether as a result of a declared war or not, or who shall have been discharged or released from such service in less than 90 days by reason of a service-connected disability shall, upon sufficient identification, upon sufficient proof of being a permanent resident of this state and upon the production of an honorable discharge from or other proof of the honorable termination of such service, be exempt from business or occupational license taxes for a period of six years after July 6, 1945 or for a period of six years after his or her discharge from or termination of service, whichever is later, to the extent and subject to the conditions herein specified. No exemption, however, shall be allowed any such person from the license tax on what commonly are known as rolling stores, nor shall the exemption herein granted be construed as relieving any person from the payment of any license tax for the registration or operation of any motor vehicle, unless otherwise provided by law.