For example Alexander's campaigns, or perhaps later like Hannibal's or Caesar's. The logistics of feeding those armies sort of confound me. These armies would march tens of thousands of soldiers for hundreds of miles over several years. With no refrigeration and salt pretty much the only known preservative, I can imagine such group of hungry men sucking the agricultural resources out of a 100 mile radius of wherever they are at a given time by procuring any and all food resources by force and perhaps some diplomacy.
Thanks in advance.
hi! I don't recall that any of these posts will answer your questions directly, so hopefully someone will drop by with answers for you, but it so happens that I rounded up a bunch of posts on logistics just the other day; you may find them of interest
General
How did generals feed huge armies in the field in ancient and medieval times?
How did ancient armies manage to provide food for massive armies over long campaigns? - Ancient China, Carolingian/Early French army
How did classical armies get food? -Peloponnesian war, also Aztecs
Alexander the Great
How did they deal with the logistics/supply chain management in ancient/medieval times?
How did huge armies, like that of Santa Anna's or Alexander the Great's, manage to feed themselves over those long distances? - also Santa Anna
Ancient Rome
I can recommend two books on this actual subject. Engel's "Alexander the Great and the Logistics of the Macedonian Army" and Roth's "The Logistics of the Roman Army".
The latter is a much more extensive coverage of all aspects of Roman logistics including re-enactor data alongside primary sources. Engels is very much focused on the campaigns of Alexander and doesn't really cover anything outside it.
And yes, the feeding of thousands upon thousands of men is a neglected and quite frankly jaw-dropping achievement by these ancient states.
I unfortunately don't have too much time to go into detail, but there is a fascinating article written by John F. Shean called Hannibal's Mules: The Logistical limitations of Hannibal's Army at the Battle of Cannae.
Goes into plenty of detail to the logistical situation for Hannibal and offers an explanation as to why Hannibal did not lay siege to Rome when he clearly had the chance.