Letter to General S. B. Buckner, Confederate Army

Headquarters, Army in the Field
Camp near Fort Donelson, February 18th, 1862
Sir: Yours of this date, proposing armistice and appointment of commissioners to settle terms of capitulation, is just received. No terms except unconditional and immediate surrender can be accepted. I propose to move immediately upon your works.

I am very respectfully, your obedient servant
U. S. Grant
Brigadier General, Commanding