Section 64
SEC. 64. The following, during the period, of their employment or functions, may have their trainee instruction deferred for not to exceed three years: Such officers and employees of the insular, provincial, municipal, and municipal district governments, as the President may designate in executive orders. Officials and agents of organized police forces. Officials of land, air, and marine transport. The persons above mentioned shall be exempted from all military service except trainee instruction and except for active service in a national emergency, expressly declared by the National Assembly when they shall be liable for military service or special assignment as directed by the President.