> Something often left out of fiction about war is how easily a moving army can overwhelm a local ecosystem, particularly if its supply lines sag. You might not even be their target, and yet you will be pillaged. No more easy hunting for you for years. No more quick trips for firewood, or tinder.

This is also why so many soldiers ended up dead outside of battle, and not from getting stabbed. Why Sun Tzu and Clauzewitz went on and on about logistics.

Micro-nitpick: it‘s „Clausewitz“ with an „s“.

While indeed an army marches on its stomach, it's easy to miss the fact that the entire field of operations research which now runs such modern marvels as international air transport and major data centers grew out of the field of logistics, which itself grew out of increasing complexity in once primitive military food logistics.