aide-de-camp, to General Beauregard, states: "About 11.30 o'clock it was apparent that the enemy's main attack was on our left, and our forces began to yield to the vigor of his attack." When Rousseau's brigade was formed, his right was in the air. McCook held it in place till Kirk's brigade arrived from Savannah, and occupied the time exploring the ground to his front and right. Kirk having arrived, McCook moved Rousseau's brigade across a ravine to a rising ground a few hundred yards in advance, and placed Kirk's brigade in reserve of Rousseau's right, to protect the exposed flank. A company of regulars (there were three battalions of regulars in Rousseau's command) was sent into the woods as skirmishers. In less than an hour the skirmishers were driven back and followed by the Fourth Kentucky Regiment and Fourth Alabama Battalion belonging to Trabue's brigade. After a fierce attack for twenty minutes, the assailants fell back before the rapid and well-directed fire of Rousseau's men and retired out of sight in the timber. Trabue's regiments rallied and quickly returned to the assault with greater vigor than before. The steady fire of Rousseau's men again drove them to retreat; Rousseau advanced into the timber, passed through it to an open field, when Trabue, who, with three regiments was engaged with McClernand, united the two portions of his brigade and charged furiously upon Rousseau. After a desperate struggle Trabue gave way; Rousseau captured two guns and repossessed McClernand's headquarters.