June 28 1863. There is the chance that rebel Gen. Kirby Smith may attack our troops from the Louisiana side of the Mississippi River in an attempt to relieve the siege. I wrote to warn Gen. Dennis,
HDQRS. DEPT. OF THE TENN., near Vicksburg, June 27, 1863.
Brigadier General E. S. DENNIS, Comdg. District of Northeastern Louisiana:
GENERAL: There is now a probability that [E. K.] Smith will come into the point opposite Vicksburg, for the purpose of aiding the rebel garrison in their escape or to furnish them supplies. Should you discover any attempt of the kind, concentrate your whole force, black and white, from Lake Providence, down at Young’s Point, or the most suitable place for resisting them. With Johnston in my rear, I cannot detach troops for that purpose. Should such a move become necessary, notify the negro commissioners of the fact, so that they can warn the planters in time to drive in their stock and hands within our lines for safety.
You had better notify the commissioners at once that such a course may become necessary.
U. S. GRANT
The Papers of Ulysses S Grant, Vol 8, p 438-9
O.R., I, xxiv, part 3, p 444