Civilian casualty ratio
Some 7 million combatants on both sides are estimated to have died during World War I, along with an estimated 10 million non-combatants, including 6.6 million civilians. The civilian casualty ratio in this estimate would be about 59%. Boris Urlanis notes a lack of data on civilian losses in the Ottoman Empire, but estimates 8.6 million military killed and dead and 6 million civilians killed and dead in the other warring countries. The civilian casualty ratio in this estimate would be about 42%. Most of the civilian fatalities were due to famine, typhus, or Spanish flu rather than combat action. The relatively low ratio of civilian casualties in this war is due to the fact that the front lines on the main battlefront, the Western Front, were static for most of the war, so that civilians were able to avoid the combat zones.
Francophobia
The prime ministers of France between the World Wars were generally frightened about German intentions, as France sustained more casualties in the First World War than any other Western country, approximately 1.4 million military and 1.6 million total casualties. Accordingly, French policies towards Germany in general, more specifically the Nazis, were more aggressive than that of other Western nations. Relations were very poor at the time, and French leaders were also acutely aware that the population of Germany (64 million) exceeded that of France by a considerable margin (40 million), a major strategic vulnerability.