La. Stat. tit. 17 § 423
Anything in this Part to the contrary notwithstanding, any person who shall have served on active duty in the armed forces of the United States during World War II or the Korean or Viet Nam conflicts shall receive credit under the minimum salary schedule provided for in R.S. 17:419 through 422 for the period that he served in the armed forces of the United States.
The term "person", as used in this Section, shall mean and include only a person who was a regularly employed teacher, as that term is defined in R.S. 17:441, by a school system of this state prior to the time of induction for service in World War II or the Korean or Viet Nam conflicts; provided, however, that notwithstanding any other provision of this Section any credit which has heretofore been granted by any parish or city school board under the minimum salary schedule established by R.S. 17:419 through 421 for military service rendered prior to the effective date of Act No. 585 of 1972 shall not be denied, and if such credit has heretofore been discontinued it shall be restored and henceforth continued in effect just as if such credit had never been interrupted, stopped, or denied.
La. R.S. § 17:423