In World War I the US suffered slightly fewer than 120,000 combat deaths. For the UK, France, and Germany the figures are respectively 885,000, 1.4 million, and over 2 million. In World War II, when the US lost about 420,000 armed forces in combat, Japan lost 2.1 million, China 3.8 million, Germany 5.5 million, and the Soviet Union an estimated 10.7 million. The Vietnam Veterans Memorial in Washington, D.C., records the deaths of 58,195 Americans over the course of a war lasting fifteen years: but the French army lost double that number in six weeks of fighting in May–June 1940. In the US Army's costliest engagement of the century—the Ardennes offensive of December 1944–January 1945 (the "Battle of the Bulge")—19,300 American soldiers were killed. In the first twenty-four hours of the Battle of the Somme (July 1, 1916), the British army lost more than 20,000 dead. At the Battle of Stalingrad, the Red Army lost 750,000 men and the Wehrmacht almost as many.
With the exception of the generation of men who fought in World War II, the United States thus has no modern memory of combat or loss remotely comparable to that of the armed forces of other countries. But it is civilian casualties that leave the most enduring mark on national memory and here the contrast is piquant indeed. In World War II alone the British suffered 67,000 civilian dead. In continental Europe, France lost 270,000 civilians. Yugoslavia recorded over half a million civilian deaths, Germany 1.8 million, Poland 5.5 million, and the Soviet Union an estimated 11.4 million. These aggregate figures include some 5.8 million Jewish dead. Further afield, in China, the death count exceeded 16 million. American civilian losses (excluding the merchant navy) in both world wars amounted to less than 2,000 dead.
(Judt, “What Have We Learned If Anything” NY Review, April 2008)