'Casualties' in the Bible

The descendants of Benjamin went out to meet the troops, and they lured [them] away from the city and began to inflict casualties on the troops as before, on the main road, one of which goes up [to] Bethel, the other to Gibeah; [and] in the field [there were] about thirty men of Israel.

And the men of Israel turned in the battle, and Benjamin began to inflict casualties on about thirty men of Israel because they thought, "They will be completely defeated before us as in the first battle."