https://en.wikipedia.org/wiki/Holocaust_victims
https://military-history.fandom.com/wiki/Eastern_Front_(World_War_I)
https://en.wikipedia.org/wiki/List_of_wars_by_death_toll
https://www.nationalww2museum.org/war/articles/asia-pacific-war-1945
https://www.historyhit.com/18-key-bomber-aircraft-from-world-war-one/
https://en.wikipedia.org/wiki/Air_raids_on_Japan
https://www.americanheritagemuseum.org/exhibits/world-war-ii/eastern-front/