Perched atop a bluff in the remote Black Hills, a veterans hospital built of thick blocks of pink sandstone and topped with red-tiled roofs in a Spanish mission style overlooks the tiny town of Hot Springs, South Dakota, and has provided recovering soldiers a bucolic haven for more than a century. Wounded warriors from Civil War battles at Antietam and Gettysburg came to the Battle Mountain Sanitarium for brief, intensive treatments for musculoskeletal and respiratory conditions.