▁was ▁to ▁pass ▁Ga ese ong , ▁M uns an ▁and ▁Se oul . ▁The ▁second ▁was ▁to ▁pass ▁U ije ong bu ▁and ▁Se oul ▁and ▁the ▁goal ▁of ▁the ▁third ▁was ▁to ▁pass ▁Ch un che on . ▁Of ▁these ▁three ▁lines , ▁the ▁Ch un che on ▁advance ▁was ▁halt ed , ▁but ▁the ▁Ga ese ong - M uns an ▁line , ▁after ▁a ▁ 1 - day ▁delay , ▁broke ▁through ▁and ▁the ▁U ije ong bu ▁line ▁broke ▁through ▁easily . ▁ ▁The ▁Korean ▁People ' s ▁Army ▁( K PA ) ▁force ▁compr ised ▁the ▁ 3 rd ▁and ▁ 4 th ▁Infantry ▁Div isions ▁rein for ced ▁by ▁the ▁ 1 0 5 th ▁T ank ▁Brigade ▁and ▁was ▁opposed ▁by ▁the ▁Republic ▁of ▁Korea ▁Army ▁( RO K ) ▁ 7 th ▁Infantry ▁Division . ▁▁ ▁The ▁R OK ▁ 7 th ▁Division ▁was ▁pushed ▁from ▁the ▁front ▁line , ▁and ▁established ▁a ▁defence ▁line ▁linking ▁Po che on ▁and ▁D ong du che on . ▁This ▁couldn ' t ▁hold , ▁and ▁the ▁division ▁was ▁pushed ▁back ed ▁to ▁U ije ong bu . ▁Ch ae ▁By e ong - de ok , ▁the ▁Chief ▁of ▁Staff ▁of ▁the ▁South ▁Korean ▁Def ence ▁Corps , ▁added ▁the ▁ 2 nd ▁Infantry ▁Division ▁and ▁other ▁men , ▁but ▁the ▁next ▁day ▁the ▁K PA ▁pushed ▁into ▁U ije ong bu . ▁▁ ▁As ▁a ▁last ▁resort , ▁the ▁South ▁Kore ans ▁established ▁another ▁defence