The concept of "casualty" refers to individuals who are wounded, disabled, or killed during conflicts or disasters, covering both military and civilian situations. In warfare, it describes those who are no longer able to perform their duties due to injury, death, or capture, while civilian casualties highlight non-combatants affected by violence. Authors such as Mrs.
Georgie Sheldon illustrated the emotional impact of casualties on survivors, Ambrose Bierce defined casualty as an unintentional loss different from deliberate combat deaths, and Philip Gibbs focused on the psychological burden of witnessing continuous human suffering. These viewpoints together emphasize casualty as a complex phenomenon, linking statistical figures with deep human consequences.