Paul sits with him during his final hours.
Paul carries his unconscious body back to an aid station.
Paul takes mercy on him and shoots him in order to put him out of his misery.
Paul himself is killed.
Germany surrenders to the Allies.
Germany had won the war.
Paul is killed in combat.
Paul survives the war but is horribly wounded.
Paul survives but is very bitter against the war and his government.
Paul survives and eventually has a family.
Here's an interesting quiz for you.