The term commonly used for someone who is severely injured or killed during a war is a casualty.
Casualties in war can be classified into two categories:
1. Killed in Action (KIA): This refers to individuals who have been killed as a direct result of enemy action during a military operation.
2. Wounded in Action (WIA): This category includes individuals who have sustained injuries as a direct result of enemy action during a military operation, ranging from minor injuries to severe wounds that may result in long-term consequences.
It's important to recognize the sacrifices made by these individuals and their families during times of conflict.