Charles Ellicott Commentary Nehemiah 12:31

"Then I brought up the princes of Judah upon the wall, and appointed two great companies that gave thanks and went in procession; [whereof one went] on the right hand upon the wall toward the dung gate:" — Nehemiah 12:31 (ASV)

The princes. —The chiefs were assembled somewhere on the south-west wall, and then divided into two companies.