l McCook, and his march began at 5 A. M. McCook had with him then two divisions, Rousseau's and Jackson's. Rousseau's division took the lead on the march, but when it arrived at Perryville only two oent — the remaining one, Starkweather's, having been thrown to the rear by the interposition of Jackson's division, which cut it off at Mackville.
Without waiting for the arrival of this brigade, General McCook, after giving his assistant adjutant-general particular instructions to post Jackson's two brigades on a commanding piece of ground immediately to the right of the Mackville and Perryvilthe old Mackville pike.
[See map, p. 24.]
（Lytle's and Harris's) and Terrill's brigade of Jackson's division.
Webster's brigade of Jackson's division had not yet come into position, and StarkwJackson's division had not yet come into position, and Starkweather's brigade of Rousseau's division had not yet reached the field.
Just previously to this the enemy, in pursuance of his plan of attack, had begun to engage Sheridan's division, the head of t