[mcguire]

France, WW1: ~1,700,000 civilian and military (1.4M is military alone.); ~4.3% of its population. (https://en.wikipedia.org/wiki/World_War_I_casualties)

Iraq's population in 2002 was about 25,000,000 (France in 1911 was 39,000,000); ~650,000 excess deaths (2003-2006, the most I could find in https://en.wikipedia.org/wiki/Casualties_of_the_Iraq_War) is about 2.6% of the population.