'Battalions' in the Bible

“Howl, O gate; cry, O city!Melt away, O Philistia, all of you;For smoke comes out of the north,And there is no straggler in his ranks and no one stands detached [in Hezekiah’s battalions].

Pharaoh, with his massive army and large battalions won't protect him when mounds and siege walls are built to destroy many people.

Be prepared. Yes, prepare yourself you and all of your many battalions that have gathered together around you to protect you.