What did Saul do after his defeat of the Amalekites?

According to the Bible, after Saul's defeat of the Amalekites, he set up a monument for himself. This event is recorded in the book of 1 Samuel in the Old Testament. In chapter 15, God had commanded Saul to destroy the Amalekites and all their possessions, but Saul spared the Amalekite king and some of the best livestock. When the prophet Samuel confronted him about his disobedience, Saul initially denied any wrongdoing, but later admitted to sparing the livestock in order to offer them as a sacrifice to God. Despite his confession, Samuel rebuked Saul and announced that God had rejected him as king. After this, Saul returned to his home and set up a monument to commemorate his victory over the Amalekites.