From Tennessee.

TRENTON, Tenn., Sept. 4, 1862.

Editors Illinois Journal:
SIRS: — Having noticed several accounts of the recent battles fought by our forces at Bolivar, Tennessee, and also at Medion Station, I think it my duty to give you a correct account of them, being myself an eye witness. I left this place on the morning of the 31st August to join my company at Bolivar, arriving at Medion Station at 5 P.M., where I found our forces there engaged with the rebels 2,5000 strong, and had been since early in the morning. Our force contending against them were only ninty of the 45th Illinois. The reinforcements which came down with me from Jackson were 200, making in all 290. Our force was well fortified with cotton bales. The forces taken from Jackson was a portion of the 7th Missouri. Our forces marched out about sun set from the Station house near three quarters of a mile, where we engaged the enemy drawn up in line. We fired into them and they all beat a hasty retreat in every direction. By this time it was dark and we were unable to pursue them, so we marched back to the fortifications and layed on our arms over night. Next morning we marched out a mile and three quarters when we found the enemy drawn up in line — infantry in front, cavalry in the rear. As soon as the enemy saw us approaching they could not stand. Their pickets was stationed in a cornfield. They fired on the advance guard, killing two. They then all retreated in the direction of Denmark. We did not think it prudent to follow them any further, for they would not give us a fair fight, so we went back to the Station and remained there.

Denmark is ten miles from Medion. The rebels had not gone more than five miles in that direction when they came in contact with Col. Dennis, of 30th Illinois, with a portion of the 20th Illinois, altogether about 600 fighting men. They had about five times their number to contend with and a hot fight ensued, but Col. Dennis bravely fought them with his handful of men, and succeeded in dispersing the rebels, killing 117 that were buried, and many more were killed, who were taken from the field by the rebels. The killed at Medion did not exceed six, among them Lieut. Green, of 45th Illinois, who received a wound in the left breast, causing his death in about thirty hours. He fought bravely and died bravely. The rebel loss was very heavy in wounded, at least 300.

As regards the fight at Bolivar, with the 2d Illinois Cavalry, I learn that Lieut. Col. Harvey Hogg and Lieut. N. T. Shannan, of Company F, were killed, and were buried on the 2d inst. I do not know the loss that we sustained at that place, as telegraph and railroad communication was cut off. We deeply mourn the loss of Col. Hogg. This I think will give the friends some relief, as there is so many different rumors.

I am, sirs, yours truly,
Capt. Co. E, 2d Ill. Cav.