Armies relying on foraging and pillaging are only a thing early in the game. Besides, it's obvious the scope of a global-scale map, and the size a single tile would be, is still underappreciated.
Depending, again, on how detailed a supply/attrition/logistics system we want - and I will always vote for KISS rule in this - foraging/pillaging/"requisitioning" were still attempted right up to the early Atomic Era in Civ VI terms. The plan for the German invasion of the Soviet Union in 1941 called for NO rations to be sent from Germany: the entire 3.4 million-man army in trhe east was to be fed by foraging. That plan collapsed as soon as they crossed the border, basically, but it shows that, if nothing else, Old Habits Die Hard.
Also, of course, by then the great majority of the Supply consisted of ammunition and fuel, not food or fodder (the German Army entered the USSR with about 600,000 vehicles, but also with over 700,000 horses: fodder for them was NOT a minor issue) and you could not expect to find that lying around waiting for you to come along and pick it up*.
For simplicity's sake, I suggest that at most the massive increase in supply requirements once you have modern Artillery, Tanks, and motorized vehicles could be shown by simple volume/amount/tonnage compared to the simpler times of Food Only or only food and bullets for muskets without going into the details of X tons of fuel, X tons of food, X pairs of spare boots, etc. Save the detailed production and supply chains for
Anno 1800 and its ilk, leave Civ to Grand Strategy and a simple dichotomy of In Supply, Not In Supply and be satisfied with that . . .
* For an example of the kind of detail no Civ game needs, Soviet gasoline in 1941 was all 80 octane or lower: it would not burn properly in German engines without modification, so even gasoline tanks captured full of fuel were not immediately useable by German front-line units.