To-day we learn a raid is being made by the enemy's cavalry form Northwestern Virginia and Tennessee Railroad and the salt-works. This is probably done to cut off General Jones' communications, as well as to strike at those important works. It is to be hoped it will be met and repelled by the remaining forces of General Jones' command, but that force is small and dispersed.

These reports are mentioned, as they enhance the importance of success in your movements and may have some influence on your counsels.

Very respectfully,

JAMES A. SEDDON,

Secretary of War.

HEADQUARTERS POLK'S CORPS,
La Fayette, September 12, 1863-3 a.m.

Major-General CHEATHAM:

GENERAL: The lieutenant-general commanding directs that you hold your command in readiness to move at daylight. You will move light, carrying your ambulance and ordnance trains.

Very respectfully, general, your obedient servant,

[THOS. M. JACK,]

Assistant Adjutant-General.

HEADQUARTERS POLK'S CORPS,
La Fayette, September 12, 1863.-3.15 a.m.

Major-General CHEATHAM:

GENERAL: In the movement ordered this morning the lieutenant-general commanding expects you to take with you three days' cooked rations.

Respectfully, general, your obedient servant.

[THOS. M. JACK,]

Assistant Adjutant-General.

LA FAYETTE, September 12, 1863-9.30 a.m.

Major-General CHEATHAM:

GENERAL: The lieutenant-general commanding directs that you at once proceed to Rock Spring with your division and take position there.

Respectfully, general, your obedient servant,

[THOS. M. JACK,]

HEADQUARTERS POLK'S CORPS,
La Fayette, September 12, 1863-1.30 p.m.

Major-General HINDMAN:

GENERAL: So soon as your troops are supplied with three days' cooked rations and are sufficiently refreshed, the lieutenant-general