I never said it's a good idea for all situations, but for some. It was most definitely done, so the claim that it was impossible is clearly nonsense. It was imp

I never said it's a good idea for all situations, but for some. It was most definitely done, so the claim that it was impossible is clearly nonsense. It was impossible in some circumstances, but possible in others. And of course it's a good idea to use local resources when they're available, but there's a big difference between that and relying entirely on local resources. Armies used supply lines over land during the 100 Years War[0], Romans maintained a network of supply depots[1]. It happened during most time periods. Just like there's a limit to how much food you can move how far, there's also a limit to how large an army can live off the land. Beyond a certain size, you simply need to bring your own supplies. In fact, one of Napoleon's innovations was that he organised his armies in a way that allowed larger armies than before to live off the land. But larger armies did exist before; they just had to bring supplies. And of course you're not going to supply a large army over a distance of hundreds of miles using just carts. They used ships where possible, they used supply depots, and organised the most efficient routes by which to maintain those. But you bet lots of land travel was involved as well. [0] https://www.warhistoryonline.com/medieval/army-supplied-100-years-war.html https://www.warhistoryonline.com/medieval/army-supplied-100-... [1] https://www.everythingsupplychain.com/roman-army-supply-lines-logistics/ https://www.everythingsupplychain.com/roman-army-supply-line...