Rienzi, Sunday, Sept. 21. Was another repetition of that a week ago only on a little larger scale. The horses were harnessed at 1 A. M. and we went out on the Ripley road three quarters of a mile, laid there half an hour waiting for the enemy, then filed left on our drilling ground, drilled half an hour, then came home and unharnessed. Received new gun carriages and caissons in the afternoon. Report of another great battle at Iuka in which 1000 of our men were killed in twenty-five minutes. Colonel Murphy of the 8th put under arrest for withdrawing his men. Stood guard duty.