Course of the War Total War Global War
Course of the War Schlieffen Plan Battle of the Marne (Sep. 1914) Trench warfare War of attrition
Home front War of attrition Government & economies Total war Home front War of attrition Government & economies
Global War Ottoman Empire (1914) – Middle East Japan (1914) Italy (1915) – Irredenta Empires India: 1.4 million soldiers Russia (1917) Brest-Litovsk (Mar. 1918) USA (1917) Neutrality German submarine warfare Lusitania (1915) Zimmermann Note (1917) USA enters (April 1917)
The Zimmermann note