Sustainence

Wonderful analysis! As the saying goes, "an army marches on its stomach," and your analysis of Caesar definitely highlight's that he understood well the old military axiom. In fact, some military experts, both before and after Caesar, have gained renown merely on account of being able to keep an army together in the face of starvation (George Washington's winter at Valley Forge, for example).

I mention this in order to highlight the fact that this is an excellent point to have brought up: part of Caesar's genius was indeed to pay attention to the less glorious details of campaigning: making sure his troops were well fed. Heck, one could even argue that this ties into his charism: a well-fed soldier is far more likely to be loyal to his commander, right?