WASHINGTON, August 30. — The following has just been received:
HEADQUARTERS, FIELD OF BATTLE,
GROVERON, NEAR GAINESVILLE,
August 30, 1862.
To Major Gen. Halleck, Commander-in-Chief:
We fought a terrific battle here yesterday with the combined forces of the enemy, which lasted with continuous firing from daylight until after dark, by which time the enemy was driven from the field, which we now occupy. Our troops are to much exhausted to push matters, but I shall do so in the course of the morning, as soon as Fitzjohn Porter's corps comes up from Manassas.
The enemy is still in our front, but badly used up.
WE have lost not less than 8,000 men, killed and wounded; and from the appearance of the field, the enemy has lost at least two to our one. The enemy stood strictly on the defensive, and every assault was made by ourselves.
Our troops have behaved splendidly.
The battle was fought on the identical battle field of Bull Run, which greatly increased the enthusiasm of our men. The news has just reached me from the front that the enemy is retreating toward the mountains. I go forward at once to see.
We have made great captures. I am not able yet to form an idea of their extent.
(Signed) JOHN POPE,
Maj. Gen. Commanding.