The Korean War was a brutal affair on all sides.

• Declassified U.S. National Archive military documents show that U.S. commanders repeatedly ordered their forces to kill Korean refugees on the battlefield
• Civilians believed to be enemy collaborators and/or inadequately supportive of their state were killed by state-directed executions in both North and South Korea
• Many civilian deaths occurred during combat operations (including bombings) by Chinese, South Korean, North Korean, and American forces
• Both North and South states sponsored inter-village reprisal killings by civilians
• American and ROK prisoners of war were killed by North Korean forces.

Source: Mass Atrocity Endings

Initially, the United Nations claimed only the North committed atrocities.

Eventually, it became evident that American and South Korean forces also committed such acts.