How is death presented in dulce et decorum est?

Death is presented in "Dulce et Decorum Est" as brutal and agonizing, as witnessed through the horrific death of a soldier from a gas attack. The poem challenges the glorification of war by highlighting the harsh reality of its consequences, showing that the suffering and trauma of death on the battlefield are far from noble or honorable. It exposes the brutality and senselessness of war, conveying a message that it is not the glory that people often perceive it to be.