# divided them into three units
"separated them into 3 groups" (See: [[rc://en/ta/man/translate/translate-numbers]])
# they set an ambush in the fields
"they hid in the fields to attack the people by surprise"
# he attacked
Here "he" refers to Abimelech who represents himself and all of his soldiers. Alternate translation: "they attacked" (See: [[rc://en/ta/man/translate/figs-synecdoche]])