'Outer' in the Bible

He instructed them, "Watch me, and do what I do. When we come to the outer perimeter of the encampment, do what I do.

So Gideon and the 100 men with him arrived at the outer perimeter of the encampment at the beginning of the middle watch, just after they had posted sentries. They blew their trumpets and smashed the jars that they were carrying in their hands.