Austria-Hungary
Germany
Serbia
Russia
Belgium
The Schlieffen Plan
Sturm und Drang
The Hindenburg Plan
Operation Barbarossa
AustriaHungary
Austria-Hungary
Battle of Verdun
Battle of the Somme
Battle of Passchendaele
Battle of Messines Ridge
Romania
Grecce
Serbia
Bulgaria
Mexico
Cuba
Pananma
Canada
Bulgaria
Italy
Austria-Hungary
Greece