To refer to someone severely injured or killed during a war, use the word "casualty". In textbooks or articles, you would hear something like "this war had 60,000 casualties". By definition, a casualty is a person killed or injured in a war. Hope this helps!
Explanation: Casualty is a person who is injured, disabled or killed during an event, which may be an accident, a non-violent incident, a disaster, or a war. Usually, the term "casualty" implies the death of a large number of people during one of the above events. In the particular case of "casualty of war", human casualties are understood as an ugly expression of military defeat. Also, under this term are implied and missing and captured during war events.
