'Encampment' in the Bible

So David got up early in the morning, left the flock with a keeper, picked up the provisions and went just as Jesse had directed him. And he came to the encampment as the army was going out in battle formation shouting the battle cry.

So David arose and went to the place where Saul had camped, and saw the spot where Saul lay, as well as Abner the son of Ner, the commander of his army; and Saul was lying inside the circle of the camp, with the army camped around him.

So David and Abishai went to the army during the night, and there was Saul lying asleep inside the circle of the camp with his spear stuck in the ground by his head; and Abner and the people were lying around him.