The Western Front comprises the provinces Belgium, Burgundy, Picardy, and Ruhr. It majorly concerns the Great Powers Germany and France, and it minorly concerns England, Russia, and Italy. Belgium is the critical province of this theatre--for it often serves as a catalyst for alliances against those who capture it.
The Eastern Front comprises the provinces Baltic Sea, Black Sea, Galicia, Livonia, Moscow, Prussia, Rumania, Ukraine, and Warsaw. It majorly concerns the Great Powers Germany, Russia, and Austria-Hungary; and it minorly concerns England, Turkey, Italy, and France. Baltic Sea and Galicia are the critical provinces of this theatre--for control of either of them is often contested by those who majorly concern it.
The Italian Front comprises the provinces Trieste, Tyrolia, and Venice. It majorly concerns the Great Powers Austria-Hungary and Italy, and it minorly concerns Germany, Russia, Turkey, and France. Tyrolia is the critical province of this theatre--for it borders three Great Powers' home supply centres.
The Middle Eastern Front comprises the provinces Armenia, Constantinople, and Syria. It majorly concerns the Great Powers Russia and Turkey, and it minorly concerns England, Austria-Hungary, and Italy. Armenia is the critical province of this theatre--for it often serves as a springboard for any offenses directed towards the other majorly concerning it.
The Balkan Front comprises the provinces of Albania, Bulgaria, Greece, and Serbia. It majorly concerns the Great Powers Turkey and Austria-Hungary, and it minorly concerns Russia and Italy. Greece is the critical province of this theatre--for it often acts as a barrier between those majorly concerning it.
And the African Front comprises the provinces of North Africa and Tunis. It majorly concerns the Great Powers Italy and France, and it minorly concerns England, Turkey, and Austria-Hungary. North Africa is the critical province of this theatre--for its control often allows its owner to fortify the Mediterranean, setting up a potential stalemate position.