Then Samuel took the vial of oil, and poured it on his head, and kissed him, and said, Isn't it that Yahweh has anointed you to be prince over his inheritance?
The third phase prepared all Israel to accept Saul as king; and this was accomplished by the great victory over the Ammonites.  We would like to read from any critic just how any one of these phases could possibly have been omitted.