McCook with his two divisions came within about three miles of Perryville about 10.30 A.M. of the 8th, and there encountered some resistance, and later his troops were advanced and formed with the right of Rousseau's division, resting near a barn south of the Perryville and Mackville road, its left extending on a ridge through a corn field to a wood occupied by the 2d and 33d Ohio. The right of General William R. Terrill's brigade of Jackson's division rested on woods to the left of Rousseau, his left forming a crotchet to the rear. Starkweather and Webster's brigades of Rousseau and Jackson's divisions, respectively, were posted by McCook in support of the line named. Sheridan and R. B. Mitchell's divisions of the Third Corps were posted, not in preparation for battle, several hundred yards to McCook's right, but supposed to be near enough to protect it.(33) Save some clashes of the skirmish lines and bodies seeking positions, no fierce engagement took place until 2 P.M., when a determined attack in force fell on Terrill's brigade, causing it to soon give way, General James S. Jackson, division commander, being killed at the first fire, and Terrill fell soon after. McCook had previously (about 12.30 P.M.) ridden to Buell's headquarters, about two and a half miles distant, and informed him of the situation, but this did not awaken him to the apprehension that a battle was about to be fought. McCook's entire command present on the field was soon engaged against great odds. Of this Captain Fisher of McCook's staff informed Buell in his tent at 3.30 or 4 P.M., and Buell claimed it was his first news that a battle had been raging on his front. Polk, with three divisions of infantry and a complement of artillery, and with cavalry on each flank, had fallen on the two unsupported divisions of McCook, choosing his place and manner of attack skilfully. Rousseau's right was struck soon after Terrill's brigade was driven back, and the whole of his division was soon in action. The Confederates advanced under cover of their artillery fire, outflanking Rousseau's right. His troops stood to their work against odds and made a most gallant resistance. Their right was turned, when Gilbert's idle corps was near enough to have come at once into action and afforded it protection. McCook's command, though suffering much, was not driven from the field. My old regiment occupied the crest of a hill, its right behind a hay-barn. In this position, under Colonel John Beatty, it fought, exposed to a heavy fire from the enemy's batteries and to a front and flank fire from his infantry. The barn at last took fire, and its flames were so hot the right of the regiment was forced to temporarily give way. Its loss was 190 of its then 500 men in line, including Captains Cunard and McDougal and Lieutenants St. John and Starr among the killed. Colonel W. H. Lytle, commanding the brigade, was wounded and captured.