February 6, 1862
The surrender of Henry Hamilton to George Rogers was the unconditional surrender of Fort Sackville. This took place on February 25, 1779 in Vincennes, Indiana.
three days
Fort Henry fell on February 6, 1862. Fort Donelson fell February 16, 1862. It was at Fort Henry that Ulysses Grant received the name "Unconditional Surrender". The commander of Donelson, General Simon Bolivar Buckner requested terms of surrender. Grant replied: " No terms except unconditional and immediate surrender can be accepted. I propose to move immediately upon your works." Buckner would reply in part; "to accept the ungenerous and unchivalrous terms which you propose." Source: Personal Memoirs of U. S. Grant.
After the surrender of Fort Donelson in February 1862, Ulysses S. Grant earned the nickname "Unconditional Surrender Grant." This nickname was derived from his demand for the unconditional surrender of Confederate forces at the fort, which marked a significant early victory for the Union in the Civil War. The moniker emphasized his resolute and aggressive approach to warfare.
The next objective was the river-ports of Fort Henry and Fort Donelson. (That was where Grant demanded 'Unconditional Surrender', which became his trademark name.)
it occurred a year after British general Cornwallis surrender at york town.
When South Carolina forced the surrender of Fort Sumter.
They would not surrender their fort
Fort Necessity
fort Henry and fort donleson happen in northern TN.
The surrender of Fort Sumter
The immediate result of the surrender of Fort Sumter was am agreement that they would evacuate and not surrender. After the surrender, many people pushed for Lincoln to send troops back in to take control of the Forts and save the Union.