Numbers 10:6

When you blow an alarm the second time, then the camps on the south side [of the tabernacle] shall set out. They shall blow an alarm whenever they are to move out [on their journeys].

Numbers 2:10-16

“On the south side shall be the standard of the camp of Reuben, by their armies; and Elizur the son of Shedeur shall lead the sons of Reuben,

Numbers 10:18

Next the standard of the camp of the sons of Reuben, according to their armies, moved out, with Elizur the son of Shedeur [commander] over its army,

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 shall be the standard of the camp of Reuben, by their armies; and Elizur the son of Shedeur shall lead the sons of Reuben,