Collocations for casualty - noun

heavy, high, serious
light, low
pedestrian, road (both BrE)
civilian, military
human

cause, inflict
The guerrillas inflicted heavy casualties on the local population.

incur, suffer, sustain, take
Our division suffered only light casualties.

avoid, minimize, prevent

count, figures, list, rate

be admitted to
He was admitted to casualty with head injuries.

rush sb to, take sb to

department, unit, ward

in casualty
He works as a doctor in casualty.