Investment Of Fort Donelson--The Naval Operations--Attack Of The Enemy--Assaulting The Works--Surrender Of The Fort.
I informed the department commander of our success at Fort Henry and that on the 8th I would take Fort Donelson. But the rain continued to fall so heavily that the roads became impassable for artillery and wagon trains. Then, too, it would not have been prudent to proceed without the gunboats. At least it would have been leaving behind a valuable part of our available force.

On the 7th, the day after the fall of Fort Henry, I took my staff and the cavalry--a part of one regiment--and made a reconnoissance to within about a mile of the outer line of works at Donelson. I had known General Pillow in Mexico, and judged that with any force, no matter how small, I could march up to within gunshot of any intrenchments he was given to hold. I said this to the officers of my staff at the time. I knew that Floyd was in command, but he was no soldier, and I judged that he would yield to Pillow's pretensions. I met, as I expected, no opposition in making the reconnoissance and, besides learning the topography of the country on the way and around Fort Donelson, found that there were two roads available for marching; one leading to the village of Dover, the other to Donelson.