“No we must leave not a single
Trojan alive, not even the baby boy
that his mother still holds in her womb-not even one
must slip from our hands now. All the males must be slaughtered,
every last male in Troy, unmourned, unburied.”
That expresses things fairly succinctly.
It brings to mind examples in the Old Testament such as I Samuel 15:3 in which Saul is told by the Lord to “kill both man and woman, infant and nursing child, ox and sheep, camel and donkey.”
It’s interesting to note that a little later in Book 6 (6.216-240) Diomedes and Glaucus although on opposite sides are not able to kill each other since their grandfathers were friends.