Newly discovered 1864 map pinpoints grave sites of soldiers killed in Battle of Antietam

History, a bit like science, is constantly remade. New facts emerge, fueling new interpretations.

That’s what just happened with the Battle of Antietam, where Union and Confederate soldiers died in droves on the bloodiest day in American history. A newly discovered 1864 map, spotted by an alert historian in Gettysburg, pinpoints their hasty graves on the Sharpsburg, Md., battlefield in startling detail.

https://www.starexponent.com/news/map-discovery-a-rosetta-stone-for-battle-of-antietam/article_68643d7e-2e3e-5e79-82a4-9eec3ab57995.html