I read a lot of historical stuff and have a particular interest in military, guerilla,
irregulars, economic and political history of that era and even the antebellum time. There are a fair number of published memoirs of subordinate officers and associated scouts, collaborators, spys and even somewhat involved local residents of that era, that can be identified, procured and read for very local information. And don't fail to read available diaries of the wives, mothers and sisters for detailed info. Mary Chesnut, the diarist of that era, is an example.
Some of these sources can be a tad boring, but still useful, but others can be fascinating for people interested in history, and, particularly, military/war years history. Genealogical groups, local historical orgs
If you are really into it, try to identify the actual military units and construct a timeline for the comings and goings of the sundry units when they are in a set area of interest. USGS topographic maps would be useful to plot stuff on. Some are available online. You may even be able to track down some of the earliest topo maps and see on them where villages and structures existed not that long after the war.
It has been said that an army moves on its stomach. they would generally try to camp near good water in sufficient volume for themselves and their livestock. They would all forage for provisions. These activities would also possible hit the radar screens of local agriculturists, which was lots of people in that era.