Short answers, pulled from the story.
The total number of military and civilian casualties in World War I reached about forty million people across all belligerent nations. Estimates for deaths range from fifteen to twenty-two million while approximately twenty-three million personnel were wounded.
France mobilized nearly eight point four million men yet reported over one point three million dead and missing by June 1919. This figure represents a significant portion of the total military losses suffered by the Triple Entente which totaled about six million military personnel throughout the global theater.
Official government reports listing casualty figures were published by the United States and Great Britain after the fighting ended. Secondary sources released during the nineteen-twenties serve as primary references for modern historical works regarding these statistics.
Casualty statistics vary greatly because different recording standards existed between warring governments. A general caveat regarding these numbers is that they cannot be considered comparable in every case since methodology was not uniform and some records remain incomplete or have been lost entirely.
Nearly twenty percent of Chinese workers recruited under the Beiyang government died during service often due to influenza rather than enemy fire. Military Labour Corps included six hundred thousand non-combatant stevedores who followed armies into battle zones yet received little recognition compared to regular soldiers.