...my in the field, Fort Donelson, February 16, 1862. Gen. G. W. Cullom, Chief of Staff Department of Missouri: General: I am pleased to announce to you the unconditional surrender, this morning, of Fort Donelson , with twelve to fifteen thousand prisoners, at least forty pieces of artillery, and a large amount of stores, horses, mules, and other public property. I left Fort Henry on the twelfth inst., wit...