War criminals are individuals who commit serious violations of the laws and customs of war. These actions can include genocide, torture, and the deliberate targeting of civilians. Such crimes are often prosecuted in international courts, like the International Criminal Court, to ensure accountability and justice. The term "war criminal" applies to both military leaders and political figures who orchestrate or carry out these acts. Notable examples include Adolf Hitler and Slobodan Milošević, who faced charges for their roles in atrocities during conflicts. Holding war criminals accountable is essential for promoting peace and preventing future violations.