What atrocities were committed in World War 1?

World War I saw numerous atrocities, including the widespread use of chemical weapons, which caused severe suffering and long-term health effects among soldiers and civilians. The war also involved brutal trench warfare, leading to high casualties and horrific living conditions. Additionally, the Armenian Genocide occurred during this period, where the Ottoman Empire systematically exterminated an estimated 1.5 million Armenians. Other war crimes included the targeting of civilians and the use of forced labor in occupied territories.