Numbers 10:6

Amplified Bible

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].

Cross References

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,

Numbers 10:7

When the assembly is to be gathered, you shall blow [the trumpets in short, sharp tones], but without sounding an alarm.