▁ 3 0 6 ▁Reserve ▁Battalion ▁training ▁camp ▁in ▁U ije ong bu , ▁G ye ong gi ▁Province , ▁to ▁under go ▁five ▁weeks ▁of ▁basic ▁training , ▁followed ▁by ▁active ▁duty ▁for ▁ 2 1 ▁months . ▁He ▁was ▁initially ▁in el ig ible ▁for ▁active ▁duty ▁following ▁a ▁car ▁crash ▁in ▁ 2 0 0 7 ▁and ▁an ▁ag gra v ated ▁h erni ated ▁disk , ▁but ▁after ▁receiving ▁treatment ▁he ▁was ▁able ▁to ▁en list ▁for ▁active ▁duty . ▁ ▁In ▁January ▁ 2 0 1 3 , ▁Le ete uk ▁co - star red ▁in ▁military ▁musical ▁The ▁Promise . ▁It ▁was ▁co - produ ced ▁by ▁the ▁Ministry ▁of ▁National ▁Def ense ▁and ▁Korea ▁Musical ▁Theatre ▁Association , ▁to ▁comm emor ate ▁the ▁ 6 0 th ▁anni versary ▁of ▁the ▁signing ▁of ▁the ▁arm ist ice . ▁It ▁ran ▁from ▁January ▁ 9 ▁to ▁ 2 0 ▁at ▁the ▁National ▁Theater ▁of ▁Korea , ▁co - st arring ▁actors ▁Ji ▁Hy un - wo o , ▁Kim ▁Mu - ye ol , ▁Jung ▁T ae - wo o ; ▁as ▁well ▁as ▁sing ers ▁Y oon ▁H ak ▁of ▁Super n ova , ▁and ▁Lee ▁Hy un ▁of ▁ 8 E ight . ▁The ▁musical ▁is ▁centered ▁around ▁a ▁group ▁of ▁soldiers ▁who ▁keeps ▁a ▁promise ▁made ▁to ▁each ▁other ▁during ▁the ▁Korean ▁War . ▁ ▁Le ete uk ▁completed ▁his ▁military ▁service ▁on ▁July ▁ 2 9 , ▁ 2 0 1 4 .