A member who is not a participant in the deferred retirement option plan established under section 742.43 of the Revised Code may purchase service credit which shall be considered as the equivalent of Ohio service for each year of service the member was a prisoner of war. The number of years purchased under this division shall not exceed five. Service credit may be purchased under this division for the same years of service used to purchase service credit under division (A) of this section. The member may choose to purchase only part of such credit in any one payment, subject to board rules.
"Armed forces" of the United States includes army, navy, air force, marine corps, coast guard, or any reserve component of such forces; national guard; the commissioned corps of the United States public health service; the merchant marine service during wartime; auxiliary corps as established by congress; service as a red cross nurse with the army, navy, air force, hospital service of the United States, army nurse corps, navy nurse corps, or serving full-time with the American red cross in a combat zone; and such other service as may be designated by congress as included therein.
A member of the fund who has purchased service credit under this section, or the member's estate, is entitled to be refunded the amount paid to purchase such credit, or a pro rata portion thereof, provided that the purchased service credit, or a portion of the purchased service credit, does not serve to increase a pension or benefit paid under section 742.37 or 742.39 or calculated under section 742.442 of the Revised Code. The refund of any amount paid to purchase credit under this section, or a pro rata portion thereof, shall cancel an equivalent amount of service credit.
R.C. § 742.52