Recruitment poster for the United States Army. Marching soldiers. Some soldiers are making an inviting gesture. Text:
'Fight alongside Your Friends.
Fill up the National Guard.
All branches of Army Service are open to you.
Committee of Public Savety, Department of Military Service, South Penn Square, Philadelphia'.
When the war began the United States proclaimed a policy of strict neutrality. But after the sinking of seven U.S. merchant ships by German submarines and the Zimmerman Telegram the U.S. called on war on Germany on 6 April 1917. The United States had a small army, but, after the passage of the Selective Service Act, it drafted 2.8 million men, and, by summer 1918, was sending 10,000 fresh soldiers to France every day. In 1917, the U.S. Congress gave U.S. citizenship to Puerto Ricans when they were drafted to participate in World War I, as part of the Jones Act.
See this item in our Image collection, here.
A selection of relevant publications from the Peace Palace Library collection
- Boghardt, T., The Zimmermann Telegram: Intelligence, Diplomacy, and America’s Entry into World War I, Annapolis, MD, Naval Institute Press, 2012.
- Fenske, H., Der Anfang vom Ende des alten Europa: die alliierte Verweigerung von Friedensgesprächen 1914-1919, München, Olzog, 2013.
- Graebner, N.A., The Versailles Treaty and its Legacy: the Failure of the Wilsonian Vision, Cambridge, Cambridge University Press, 2011.
- Hawes, J., Englanders and Huns: How Five Decades of Enmity Led to the First World War, London, Simon and Schuster, 2014.
- Kraus, H.-C., Versailles und die Folgen: Außenpolitik zwischen Revisionismus und Verständigung, 1919-1933, Berlin, be.bra Verlag, 2013.
- Panayi, P., Prisoners of Britain: German Civilian and Combatant Internees during the First World War, Manchester, Manchester University Press, 2012.
- MacMillan, M.O., The War that Ended Peace: The Road to 1914, New York, NY, Random House, 2013.
- McMeekin, S., July 1914: Countdown to War, New York, NY, Basic Books, 2013.
- Nielson, J.M., American Historians in War and Peace: Patriotism, Diplomacy and the Paris Peace Conference, 1918-1919, Bethesda, MD, Academia Press, 2012.
- Pignot, M., Allons enfants de la patrie: génération Grande Guerre, Paris, Seuil, 2012.
- Samson, A., World War I in Africa: the Forgotten Conflict among the European Powers, London, Tauris, 2013.
- Reisser, W.J., The Black Book: Woodrow Wilson’s Secret Plan for Peace, Lanham, MD, Lexington Books, 2012.
- Wawro, G., A Mad Catastrophe: The Outbreak of World War I and the Collapse of the Habsburg Empire, New York, Basic Books, 2014.
- Wolf, S., Guarded Neutrality: Diplomacy and Internment in the Netherlands during the First World War, Leiden, Brill, 2013.
- Yanikdaǧ, Y., Healing the Nation: Prisoners of War, Medicine and Nationalism in Turkey, 1914-1939, Edinburgh, Edinburgh University Press, 2013.