On the British Concentration Camp Commanders During the Second Boer War Being so Callous and Idiotic that They Would Sometimes Situate the Field Toilets Right Next to Fresh Water Rivers and Streams, an Unforgivable Act that Led to Dysentery, Cholera, and Ultimately Death Among the Captives

And coupled with severe malnutrition you can plainly see how a quarter of the inhabitants of those literal shitholes died before the war's conclusion. Rocket science it's clearly not.