|Fort Donelson, Tenn.|
|February 11-16, 1862|
After capturing Fort Henry on Feb. 6, 1862, Brig. Gen. Ulysses S. Grant advanced cross country to invest Fort Donelson. On Feb. 16, 1862, after the failure of their full force attack aimed at breaking through Grant's investment lines, the fort's 12,000-man garrison surrendered unconditionally.
This was a major victory for Brig. Gen. Ulysses S. Grant and a catastrophe for the South. It ensured that Ky. would stay in the Union and opened up Tenn. for a Northern advance along the Tenn. and Cumberland rivers. Grant received a promotion to major general for his victory and attained stature in the Western Theater, earning the nom de guerre "Unconditional Surrender."
Result(s): Union victory
Location: Stewart County
Campaign: Federal Penetration up the Cumberland and Tennessee Rivers (1862)
Date(s): Feb. 11-16, 1862
Principal Commanders: Brig. Gen. Ulysses S. Grant and Flag-Officer A.H. Foote [US]; Brig. Gen. John B. Floyd, Brig. Gen. Gideon Pillow, and Brig. Gen. Simon B. Buckner [CS]
Forces Engaged: Army in the Field [US]; Fort Donelson Garrison [CS]
Estimated Casualties: 17,398 total (US 2,331; CS 15,067)