'Rear guard' in the Bible

The military divisions of the camp of Dan with their banner set out, serving as rear guard for all the camps, and Ahiezer son of Ammishaddai was over Dan’s division.

While the trumpets were blowing, the armed troops went in front of the priests who blew the trumpets, and the rear guard went behind the ark.

and the seven priests carrying seven trumpets marched in front of the ark of the Lord. While the trumpets were blowing, the armed troops went in front of them, and the rear guard went behind the ark of the Lord.

The military force was stationed in this way: the main camp to the north of the city and its rear guard to the west of the city. And that night Joshua went into the valley.

For you will not leave in a hurry,and you will not have to take flight;because the Lord is going before you,and the God of Israel is your rear guard.

Then your light will appear like the dawn,and your recovery will come quickly.Your righteousness will go before you,and the Lord’s glory will be your rear guard.

I will drive the northerner far from youand banish him to a dry and desolate land,his front ranks into the Dead Sea,and his rear guard into the Mediterranean Sea.His stench will rise;yes, his rotten smell will rise,for he has done catastrophic things.