 The No Gun Ri Massacre ( Hangul : <unk> <unk> <unk> <unk> ; hanja : <unk> ; RR : <unk> Mingan @-@ in <unk> <unk> ) occurred on July 26 – 29 , 1950 , early in the Korean War , when an undetermined number of South Korean refugees were killed by a U.S. air attack and the actions of the 2nd Battalion , 7th U.S. Cavalry , at a railroad bridge near the village of No Gun Ri ( Korean : <unk> ) , 100 miles ( 160 km ) southeast of Seoul . In 2005 , a South Korean government inquest certified the names of 163 dead or missing , and 55 wounded , and added that many other victims ' names were not reported . The South Korean government @-@ funded No Gun Ri Peace Foundation estimated in 2011 that 250 – 300 were killed , mostly women and children . 
