When Caesar is listening to the troop-status reports, the officer in charge mentions that some of the soldiers have died from "flux". Flux is a term used to describe dysentery or other diseases causing the loss of fluid by diarrhea or hemorrhage. Dysentery and illness in general was the largest causes of death for soldiers in the field up until the modern era. More soldiers in world-history have died from illnesses in the field than from combat related wounds.
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