World War I was fought on many fronts around the world from the battlefields of Europe to the far-flung colonies in the Pacific and Africa. While it is most famous for the trench warfare stalemate that existed on Europe's Western Front, in other theatres of combat the fighting was mobile and often involved set-piece battles and cavalry charges. The Eastern Front often took thousands of casualties a day during the major offensive pushes, but it was the west that saw the most concentrated slaughter. It was in the west that the newly industrialized world powers could focus their end products of the military–industrial complex. The deadliest day of the war was during the opening days of the conflict. The Imperial German war council had initiated the Schlieffen Plan which involved multiple armies flooding through the borders of Belgium and France. On August 22, 1914, during the Battle of the Frontiers, five separate French armies engaged the German invaders independently of each other. Across all those battlefields, on that single day, 27,000 French soldiers lost their lives protecting their country.[1]
The term casualty in warfare is often misunderstood. It often refers not to those who are killed on the battlefield but to those who can no longer fight. That can include disabled by injuries, disabled by psychological trauma, captured, deserted, or missing. A casualty is, by definition, a soldier who is no longer available for the immediate battle or campaign, the major consideration in combat. The number of casualties is simply the number of members of a unit who are not available for duty. For example, on March 21, 1918, during the opening day of the German spring offensive, the Germans casualties are broken down into 10,851 killed, 28,778 wounded, 300 POW or taken prisoner for a total of 39,929 casualties.[2] The word casualty has been used in a military context since at least 1513.[3] In this article, the numbers killed refer to those killed in action, killed by disease, or killed by their wounds.
^Portuguese faced the Germans for three days, from April 9–11, 1918. Around 500–700 were killed in action, mostly on the first day
^Two died after the war had ended. Three others died during the war on three different days: February 11, 1918 March 1, 1918 October 21, 1918
^Killed 48,917 + Died of wounds 13,198 + Accidental deaths 888 + Died of disease 24,497 + Missing presumed dead 13,729
^Killed 50,000 + Died of wounds 35,000 + Died of disease 240,000
^Hundreds of unregistered passengers, mostly Austro-Hungarian soldiers returning from leave who boarded Linz illegally at Zelenika. Some estimations go as high as 2,700 people killed
^Sources differ widely on the exact number of men killed. Gardiner and Gray and Jentschura, Jung and Mickel agree on 700, but Lengerer says 600 and Kingsepp gives 618 killed from a crew of 960
^Cyclops was last seen outside of Baltimore on March 4, 1918
^On 3 May 1915 the steamer Gul Djemal with 4000 troops on board was torpedoed and sunk by HM Submarine E-14. The number of casualties are unknown; the British claimed many were lost, while German and Turkish records report limited casualties only.
^Killed 50,000 + Died of wounds 35,000 + Died of disease 240,000
^Killed 50,000 + Died of wounds 35,000 + Died of disease 240,000
^14,000 Allied troops participated in the battle and suffered 2,000 British and 1,001 French casualties [36]
^5,300 casualties out of the 14,300 soldiers who participated [37]
Anglesey, Lord (1995). A History of the British Cavalry: Volume 8: 1816-1919 The Western Front, 1915-1918, Epilogue, 1919-1939. Pen and Sword. ISBN9781473815056. - Total pages: 224
Dickmann, Nancy (2017). The Horror of World War I. Raintree. ISBN9781474749381. - Total pages: 48
Ellis, John; Cox, Michael (2001). The World War I Databook: The Essential Facts and Figures for All the Combatants. Aurum Press. ISBN9781854107664. - Total pages: 323
Grohman, Adam M. (2008). Claimed by the Sea - Long Island Shipwrecks. LULU.com. ISBN9780578008073. - Total pages: 241
International Labour Office (1923). "Tom 4, II Les tués et les disparus". Enquête Sur la Production. Rapport Général. Paris Berger-Levrault. OCLC6445561.
Langensiepen, Bernd; Güleryüz, Ahmet (1995). The Ottoman Steam Navy 1828–1923. London: Conway Maritime Press. ISBN978-0-85177-610-1.
Reichswehr (1934). "Heeres-Sanitaetsinspektion im Reichskriegsministeriums". Sanitaetsbericht über das Deutsche Heer, (Deutsches Feld- und Besatzungsheer), Im Weltkriege 1914–1918 (in German). 3 (Sec. 1).