War crimes in World War I

During World War I (1914–1918), belligerents from both the Allied Powers and Central Powers violated international criminal law, committing numerous war crimes. This includes the use of indiscriminate violence and massacres against civilians, torture, sexual violence, forced deportation and population transfer, death marches, the use of chemical weapons and the intentional targeting of Red Cross personnel and medical facilities.

Source: Wikipedia — War crimes in World War I (CC BY-SA 4.0)