https://archive.org/stream/photographichist02mill#page/n9/mode/1up
-I don't see anything obvious that determines that this is indeed 1863. -Nothing seems much different from 1863 photos to 1900 photos (not from the book, but my own research.) -The book starts out with a lot of pictures of men, not even in uniform, fixing bridges, railroad bridges, building pontoons to cross rivers, tents, ect. -There are no photos of actual battles. -There are some photos of troops, only Union troops, never what could amount to thousands of troops. -There are cannons but not many pictures with them. -There are dead bodies, many pictures of dead men, most with out any guns, but there are a few where they have their guns. -Pictures of dead animals, some are mysterious, most are dead horses. -There are a lot of barren landscapes and some ruins. There are also a lot of intact towns. The pictures of the towns, houses and civilians are interesting in their own right. What was going on? -There are pictures of the American Flag, but NO pictures of the Confederate Flag. -There is only 1 picture of Confederate troops, very dark shadowy figures, no facial distinction at all, where as all the photos of the Union troops are very clear.
Still no pictures of large numbers of troops either side.