In any case in which the Borough has heretofore appointed a Chief of Police, Sergeants or policemen or established a Police Department by action of Council but not by or pursuant to an ordinance regularly enacted, such action shall be deemed to have been a valid exercise of the legislative power of the Borough for all purposes the same as though an ordinance had been enacted and all policemen, including the Chief of Police and Sergeants, appointed thereunder shall occupy the same status and shall have the same rights and privileges as in the case of policemen, Chief of Police and Sergeants appointed under the authority of an ordinance.