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.
German Jewish military personnel of World War I
An estimated 100,000 German Jewish military personnel served in the German Army during World War I, of whom 12,000 were killed in action. The Iron Cross was awarded to 18,000 German Jews during the war.