Archduke Franz Ferdinand is killed in Sarajevo by Serbian Nationalists.
Russia Mobilizes their Army against Germany in order to support their alliance (Serbia).
The German find out about Russia's idea and declare war against them.
The Germans are the first to use poisonous gas with effect
Remarque and Paul arrived on the Western Front.
Paul's friend Kemmerick dies leaving his boots to Meuller. Paul is starting to think the war is not what they had been told.
Paul and Remarque got injury by the splinter.
Vladimir Lenin established the new government for Russia, Russia is out of the war.
Paul's back after recovered from the injury.
The Allies had successful in pushing Germany back.
Kat was unable to make it alive while on the way to the station.