TENNALLYTOWN, July 12, 1864.

(Received 4. 20 p. m.)

Major-General AUGUR:

The enemy have thrown up earth-works, 3,500 yards, a little to the right and in front of Fort De Russy, apparently for battery and rifle-pits. Cattle herded in oat field near same.

M. D. HARDIN,

Brigadier-General.

FORT RENO, July 12, 1864.

(Received 6 p. m.)

Lieutenant Colonel J. H. TAYLOR,

Assistant Adjutant-General:

I send a dispatch* just received from Lieutenant-Colonel Crowningshield. I have sent orders to the lieutenant-colonel to follow slowly the cavalry that was on the River road, to cross over and act as reserve. Major Fry just received rations and ammunition; as soon as possible he will relieve Lieutenant-Colonel Crowninshield with his force, and be able to move more readily, his force not having been used to-day.

M. D. HARDIN,

Brigadier-General.

FORT RENO, July 12, 1864.

(Received 6. 15 p. m.)

General AUGUR,

Commanding, &c.:

The following is what I have just received from Lieutenant-Colonel Crowninshield:

There are no rebels in my front now; shall I stay where I am, or shall I go on? My men have had work and are rather tired. I can go on, however, if ordered.

M. D. HARDIN,

Brigadier-General, &c.

TENNALLYTOWN, D. C., July 12, 1864-7. 30 p. m.

(Received 7. 35 p. m.)

Surg. R. O. ABBOTT, U. S. Army,

Medical Director:

The loss is very slight on our part of the line to-day. Five killed and 20 wounded. I have no report from Fort Stevens hospital, as the Sixth Corps have taken it for their hospital. We hear now rapid and heavy firing of artillery and musketry in the direction of Forts Stevens and De Russy. Our forces are driving the enemy.

R. REYBURN,

Surgeon, in Charge of Division.

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*Not found.

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