Hospital No.1, located on the grounds of the old Hessian Barracks in Frederick, becomes the most innovative hospital in a vast hospital national network that coped with all the death and destruction during the Civil War.
Frederick suffers through every day of the War. After the Battle of Antietam (1862) it cares for more wounded than the town’s population. Advances at Hospital No.1 include eliminating hospital gangrene and using plastic surgery for disfiguring wounds.
Another major Civil War hospital is at Point Lookout in St. Mary’s County, now a state park.
In 2000 the National Museum of Civil War Medicine (NMCWM) opens in downtown Frederick, the first museum devoted entirely to the story of the medical challenges associated with the four years of conflict.

Lincoln suspends habeas corpus, locks up secessionists at Ft. McHenry
Lincoln suspends Habeas Corpus to jail secessionists at Ft. McHenry in 1861. John Merryman (pictured on the left) sues and Supreme Court Justice Roger Taney (center in photo) rules against Lincoln who ignores the ruling.