Numbers 10:6
When short blasts are sounded a second time, the tribes on the south will move out. So short blasts are to be sounded to break camp,
Numbers 2:10-16
On the south side the armies led by Reuben will camp under their flag. The leader for the people of Reuben is Elizur, son of Shedeur
Numbers 10:18
Next, the banner of the division led by the tribe of Reuben would start out, company by company. Elizur son of Shedeur was in command.
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 the armies led by Reuben will camp under their flag. The leader for the people of Reuben is Elizur, son of Shedeur