1. Someone injured or killed or captured or missing in a military engagement
2.
Fatal accident: an accident that causes someone to
die3. A decrease of military personnel or equipment
1. Officer: "We need medical support, we have three casualties, two of 'em fatal."
2. Newscaster: "There's been a casualty with the airliner, a wiring problem caused it to
crash, killing over a hundred passengers."
3. Soldier 1: "Where's our
extra ammo?"
Soldier 2: "HQ didn't send any."
Soldier 1: "Another casualty, eh?"