for the infantry pickets that you should keep up connection with them. Please give me a statement of the duties assigned you by General Meade.

Very respectfully,

G. K. WARREN,

Major-General of Volunteers.

HEADQUARTERS SECOND DIVISION, CAVALRY CORPS, July 15, 1864.

Major-General WARREN,
Commanding Fifth Army Corps:

GENERAL: The present line of cavalry pickets was established by Colonel Bryan some time ago. General Meade's instructions are to maintain the line as established by Colonel Bryan, connecting with the left of the infantry. The great scarcity of water makes it impracticable to keep more cavalry on the right than there is at present. Colonel Bryan has 1,200 men. Lee's Mill is the only watering place for cavalry in this entire section.

Respectfully, yours,

D. McM. GREGG,

Brigadier-General of Volunteers, Commanding Division.

JULY 15, 1864-9 p.m.

General S. WILLIAMS:

I have received no report from my division commanders to-night, except General Ferrero, who has nothing to report. About 7 p.m. this evening our mortars blew up a small rebel magazine. The work is progressing everywhere on my lines, and our defensive works are nearly completed.

Respectfully,

G. K. WARREN,

Major-General.

HEADQUARTERS FIFTH ARMY CORPS, July 15, 1864-9 p.m.

General HUNT and

Major DUANE:

The advance redan on the plank road is now ready to prepare for its armament. Have you yet determined what guns to put in it? If not, I would like to have this fixed, and I will set at work on it to-morrow.

Respectfully,
G. K. WARREN,

Major-General.

HEADQUARTERS ARMY OF THE POTOMAC, July 15, 1864-10 p.m.

Major-General WARREN:

The armament proposed for the redan is four siege guns and two 8-inch howitzers for each face; the howitzers nearest the angle. They