500,000 to 1,000,000

Killers with a tally between 500,000 and 1,000,000 include:

Ion Antonescu
Country: Romania
Kill tally details: About 300,000 Romanian Jews and up to 500,000 Romanian soldiers.
Théoneste Bagosora
Country: Rwanda
Kill tally details: Over 500,000 Tutsis and thousands of moderate Hutus during the Rwandan genocide of 1994. (The International Criminal Tribunal for Rwanda estimates "some 800,000 Rwandans were killed." Other sources estimate that between 800,000 and one million were killed)
Ante Pavelic
Country: Croatia
Kill tally details: 300,000 to one million, including up to 30,000 Jews, up to 29,000 Gipsies, and between 300,000 and 600,000 Serbs
Ismail Enver Pasha
Country: Turkey (the heartland of the former Ottoman Empire)
Kill tally details: In the period 1914-1918, about 600,000 Armenians killed, up to 300,000 Greeks killed or deported, about 100,000 Assyrians killed