UN troops , particularly South Korean , were also accused of killing or attempting to kill captured KPA soldiers . South Korean civilians , some of whom were leftist or communist sympathizers , were known to have been systematically imprisoned or killed in the Bodo League massacres , some of which have taken place during the battle . In the years since the fight , evidence has also surfaced indicating that the US military killed South Korean civilians shortly before the fight along the Pusan Perimeter began , fearing them North Korean infiltrators , in the No Gun Ri massacre . The evidence is debated but several books have been published on the matter
No Gun Ri massacre
No Gun Ri massacre
Battle of Pusan Perimeter