'Camp' in the Bible

it came to pass on the third day, that, behold, a man came out of the camp from Saul, with his clothes rent, and earth upon his head: and so it was, when he came to David, that he fell to the earth, and did obeisance.

And David said unto him, From whence comest thou? And he said unto him, Out of the camp of Israel am I escaped.