I hope this helps:
http://en.wikipedia.org/wiki/World_War_I_casualties#Casualties_by_1914_borders
At the bottom of the page:
France The total includes 1,186,000 killed or missing in action and died of wounds.[2] The figure for total military dead of 1,397,800 is from a study published by the Carnegie Endowment for International Peace in 1931[12]-. The total includes 71,100 French Colonial Forces, 4,600 foreign nationals, and 28,600 war-related military deaths occurring from 11/11/18 to 6/1/1919.[12,414] The UK War Office in 1922 estimated French losses as 1,385,300 dead and missing, including 58,000 colonial soldiers.[15] The U.S. War Department in 1924 estimated 1,357,800 killed and died.[25] The names of the soldiers who died for France during World War I are listed on-line by the French government.[16] The French encyclopedia Quid reports that 30-40,000 foreign volunteers from about 40 nationalities served in the French army. At the end of the war 12,000 were in the Czechoslovak Legions and the ethnic Polish Blue Army. 5,000 Italians served in a "Legion" commanded by Colonel Garibaldi. There were also 1,000 Spaniards and 1,500 Swiss in French service. 200 American volunteers served with the French from 1914-16, including the Lafayette Escadrille.[17] Luxembourg was occupied by Germany during the war. 3,700 Luxembourg citizens served in the French armed forces. 2,800 gave their lives in the war. [18] They are commemorated at the Gëlle Fra in Luxembourg. The French Armenian Legion served as part of the French Armed forces during the war.
Civilian deaths exceeded the prewar level by 500,000. 300,000 were caused by military operations and food shortages, and 200,000 by the Spanish Flu[23,30-47], Civilian dead include 1,509 merchant sailors[12,314], and 3,357 killed in air attacks and long range artillery bombardments[12,312-13]