Numbers 10:6

Overview - Numbers 10
The use of the silver trumpets.
11 The Israelites remove from Sinai to Paran.
14 The order of their march.
29 Hobab is entreated by Moses not to leave them.
33 The blessing of Moses at the removing and resting of the ark.
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Numbers 10:6  (King James Version)
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.

ye blow
A single alarm was a signal for the eastward division to march; two such alarms the signal for the south; and probably three for the west, and four for the North. There appears therefore, a deficiency in the Hebrew Text, which is thus supplied by the LXX.: [kai salpieite semasian triten, kai exarousin ai parembolai ai paremballousai para thalassan. kai salpieite semasian tetarten, kai exarousin ai parembolai ai paremballousai pros bomran.] "And when ye blow a third alarm, or signal, the camps on the west shall march; and when ye blow a fourth alarm, the camps on the north shall march." This addition, however, is not acknowledged by the Samaritan, nor any other version than the Coptic, nor any MS
yet collated.

the camps