The county commission in each county and the city council, city commissioners, or other governing body of a municipality are hereby authorized and empowered, at their discretion, to appropriate such sums of money as they may deem wise and advisable, not otherwise appropriated, to pay the necessary organization and maintenance expenses, and appropriate moneys for the purpose of furnishing, by rental or purchase, armories, office furniture, and equipment, and lockers, training areas, target ranges, sheds for military vehicles, hangars for airplanes, motor vehicles and military equipment of every character, including flying fields and similar utilities, for the military purposes of each unit of the National Guard and Naval Militia located in their respective counties and municipalities, to be accounted for to the Governor by the organization receiving such appropriation as provided in this chapter for other military funds.