How do the days events affect patroclus?

The events of the day deeply affect Patroclus by intensifying his sense of duty and loyalty to Achilles, as well as his desire to prove himself in battle. Witnessing the suffering of the Achaeans and the devastation caused by Hector fuels his determination to take action, ultimately leading him to don Achilles' armor and enter the fray. This decision reflects his inner conflict between fear and bravery, culminating in tragic consequences that alter the course of the war and his fate.