War is a high stakes logistics competition with tactics thrown in to give purpose to the logistics. Rome was a logistics empire in the same way that England and the US were. Kublai Kahn was not remembered as a great warrior like say, Oda Nobunaga, he was good at war because his troops always got food and reinforcements. Hell, this basic principle is a large part of Sun Tzu.

Excel makes logistics easier. Every empire wants that shit.