# divided them into three units

"separated them into 3 groups" (See: [[rc://en/ta/man/jit/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/jit/figs-synecdoche]])