NEAR VICKSBURG, MISS., June 22, 1863.
Brig. Gen. E. S. DENNIS, Commanding District of Northeastern Louisiana:
There is some
probability of an attack here by Joe Johnston within the next twenty-four or
forty-eight hours. In such case an attack upon you is not at all impossible;
you will, therefore, exercise unusual vigilance in your preparations to receive
an attack. Keep your cavalry out as far as possible to report any movement of
the enemy, and confer with Admiral Porter, that there may be unanimity in your
action.
U.S. GRANT.
SOURCES: The War of the Rebellion: A Compilation of the Official
Records of the Union and Confederate Armies, Series I, Volume 24, Part 3 (Serial No. 38), p. 427; John Y. Simon,
Editor, The Papers of Ulysses S. Grant,
Volume 8, p. 399-400
