Northern Name for Battle: Fort Donelson Southern Name for Battle: Fort Donelson Location of Battle: Stewart County, Tennessee Date of Battle: February 12-16, 1862 Northern Commander: Ulysses S. Grant Southern Commanders: John B. Hood and Simon B. Buckner Winner: Union Northern Troops Involved: 27,000 Southern Troops Involved: 21,000 Northern Casualties: 2,832 Southern Casualties: 16,623 Interesting Facts: Grant earned the nickname "Uncondtional Surrender" Grant at this battle.