over 3 million American men took up arms 650,000 Americans "Facts" "Facts" https://www.nps.gov/civilwar/facts.htm Facts – The Civil War (U.S. National Park Service) https://www.nps.gov/civilwar/facts.htm https://www.nps.gov/civilwar/facts.htm The Union Facts "Facts" "Facts – The Civil War (U.S. National Park Service)" "Facts" http://www.nps.gov/civilwar/facts.htm "Facts" https://www.nps.gov/civilwar/facts.htm "Facts" Civil War carnage the Confederate South https://www.nps.gov/civilwar/facts.htm 40% of the population 260,000 Confederate soldiers https://www.nps.gov/civilwar/facts.htm National Park Service died inside Confederate prisons Civil War died inside Confederate prisons https://www.nps.gov/civilwar/facts.htm National Park Service enlisted soldiers in the Confederate Army park service numbers o https://www.nps.gov/civilwar/facts.htm According to the US Parks service http://www.nps.gov/civilwar/facts.htm Union control https://www.nps.gov/civilwar/facts.htm http://www.nps.gov/civilwar/facts.htm www.nps.gov The National Park Service: The Civil War: Facts 650,000 Americans The National Park service estimates https://www.nps.gov/civilwar/facts.htm https://www.nps.gov/civilwar/facts.htm http://www.nps.gov/civilwar/facts.htm "Facts" The National Park service estimates https://www.nps.gov/civilwar/facts.htm enlisted soldiers in the Confederate Army Confederate and Union forces National Parks Service: The Civil War https://www.nps.gov/civilwar/facts.htm nps.gov "Facts" https://www.nps.gov/civilwar/facts.htm Facts are hazy if not nearly invisible facts The National Park service estimates National Park Service https://www.nps.gov/civilwar/facts.htm National Parks Service