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.
Hay, New South Wales
During the First World War 641 men enlisted for service from Hay and the surrounding district, one of the highest per capita enlistment rates in Australia.  Of the men who enlisted one-in-six died during the war, with devastating effect on the close-knit communities of the Hay district.