What term refers to individuals who lost their lives while serving in the military?

The term that specifically refers to individuals who lost their lives while serving in the military is "Casualties." This term is widely used in military contexts to denote those who suffer from harm or death as a result of combat or warfare. While "soldiers" refers to members of the military, it does not inherently imply loss of life. "Veterans" are individuals who have served in the military but may not have died in service. Therefore, the most precise term for military personnel who have died is "casualties," as it encompasses the sacrifice these individuals made in service to their country.