The Civil Service Commission may authorize the Safety-Service Director or the Director of Purchasing and Personnel, as the case may be, to appoint, without examination or other qualification, officers and employees of townships and other municipal corporations to the classified or unclassified service of the City when the City has annexed territory formerly included within the township or municipal corporation employing such officers or employees. Upon such authorization by the Civil Service Commission the Safety-Service Director or the Director of Purchasing and Personnel, as the case may be, may appoint such officers and employees, and upon their appointment such officers and employees shall have the same protection and civil service status as other employees of the City within the same classifications.