Numbers 10:5–6
5 When you blow an alarm, athe camps that are on the east side shall set out. 6 And when you blow an alarm the second time, bthe camps that are on the south side shall set out. An alarm is to be blown whenever they are to set out.
Numbers 2:34
34 Thus did the people of Israel. According to all that the Lord commanded Moses, cso they camped by their standards, and so they set out, each one in his clan, according to his fathers’ house.