World War I casualties
The total number of military and civilian casualties in World War I were about 40 million: estimates range from 15 to 19 million deaths and about 23 million wounded military personnel, ranking it among the deadliest conflicts in human history.
Military history of New Zealand during World War I
A total of 17,723 New Zealanders served in this campaign and New Zealand casualties were 640 killed in action and 1,146 wounded.