'Enemy's' in the Bible

The next morning Saul put the men into three companies; and they entered the [Ammonites’] camp during the [darkness of the early] morning watch and killed the Ammonites until the heat of the day; and the survivors were scattered, and no two of them were left together.

How much better if the army had eaten freely today of their enemy's spoil that they found, because the slaughter among the Philistines has not been great."