I’d say anything post train you’re going to try to capture infrastructure to make war, so saying we’re sieging cities sounds more ancient to me.
If you read that post, you’ll see ‘foraging’ really meant robbing and brutalizing local populaces for their food since anything but the smallest sized army can’t feed itself for more than a few weeks. Not to mention once we are sieging a city and starving all the people out.
What are some modern examples of ‘letting your army run wild on the populace’? I know that happens quite a bit but I can’t think of any sanctioned ones unless we go to wwii Japan maybe? and that was more than a little wild. Seems like most of the time a platoon or w/e just goes berserker.