Numbers 10:6
At the sound of a second loud note, the tents on the south side are to go forward: the loud note will be the sign to go forward.
Numbers 2:10-16
On the south side is the flag of the children of Reuben, in the order of their armies, with Elizur, the son of Shedeur, as their chief.
Numbers 10:18
Then the flag of the children of Reuben went forward with their armies: and at the head of his army was Elizur, the son of Shedeur.
Treasury of Scripture Knowledge
Summary
When ye blow an alarm the second time, then the camps that lie on the south side shall take their journey: they shall blow an alarm for their journeys.
The camps
Bible References
The camps
Numbers 2:10
On the south side is the flag of the children of Reuben, in the order of their armies, with Elizur, the son of Shedeur, as their chief.