'Divisions' in the Bible

So Abimelech and all the army that [was] with him got up [by] night, and they lay in ambush against Shechem [in] four divisions.

so he took the army and divided them into three divisions, and he laid an ambush in the field. And he saw the people [were] coming out from the city, and he arose against them and killed them.

Then Abimelech and the divisions that [were] with him dashed out and stood [at] the entrance of the city gate, and the two divisions dashed out against all who [were] in the field, and they killed them.