Section 5133 - Exemptions(a) The tax imposed by this chapter shall not apply to special fuel sold and delivered to and used by the following persons: (1) The United States or any governmental agencies thereof;(2) The State and every political subdivision thereof;(3) Volunteer fire companies in any of their official vehicles and veterans' or civic organizations in their ambulances when such ambulances are provided on a voluntary basis.(b) The Department may, for purposes of identification, require that the above persons apply to the Department for a special fuel tax exemption marker to be affixed to the applicable bulk supply talk or pump thereof. The tax exemption marker may be revoked by the Department for just cause.30 Del. C. 1953, § 5133; 54 Del. Laws, c. 107; 61 Del. Laws, c. 141, § 3; 65 Del. Laws, c. 297, §§8, 9; 69 Del. Laws, c. 77, §66.;