Ala. Code § 45-37A-51.303
For the purpose of application of the terms of the system, and for such purpose only, and except as may be hereinafter otherwise or differently provided in this and Section 45-37A-51.305, on and after September 1, 1969, the civil defense agency whose territorial jurisdiction or responsibilities include the territory of the city shall be deemed constructively a subsidiary board or department of the city during the civil defense agency's subsequent existence, and the employees thereof in the classified service shall be deemed constructively employees of the city during all their time in the service of the civil defense agency subsequent to September 1, 1969, and thereafter the terms of the system shall be prospectively applied to such constructive employees as fully and restrictively, and with like effect, as though the civil defense agency were actually such subsidiary board or department and as through employees of the city at all times while in the service of the civil defense agency subsequent to September 1, 1969.
Ala. Code § 45-37A-51.303 (1975)