He decides to let Patroclus wear his armor
He didn't want to fight so he let Patroclus in disguise lead his army. Patroclus made a mistake however since he didn't just return as he said he would after the defense of the beaches but rather he pushed towards the gates where he died because of this and when his armor was removed everyone saw that it wasn't Achilles.
Just put what you have highlighted. It answers the question
The Preamble is the "Opening statement to the United States Constitution." The preamble explains the reasons why the Framers of the Constitution made our government a republic. By doing this, the founding fathers replaced the Articles of Confederation.