was ordered to follow the movement on the enemy's left, and support it, with his division, at sunrise on the 18th. General Pillow had reconnoitered, in person, the works on the right of the Mexican position, and he was instructed to hold himself in readiness to attack them with his brigade, as soon as he heard the report of arms in the morning of the 18th from the other flank. Wall's field battery and the cavalry were to be held in reserve.
The division of General Twiggs arrived at its position before eleven o'clock in the morning of the 17th, — the right of the column being within seven hundred yards of the hill of Cerro Gordo. The first brigade, commanded by Colonel Harney on this occasion, in consequence of the illness of General P. F. Smith, and consisting of the rifle regiment, Major Sumner temporarily in command; the 1st artillery, Colonel Childs; and the 7th infantry, Lieutenant Colonel Plympton, were ordered to seize and maintain all the heights in the neighborhood of the enemy's main work. Accordingly, Lieutenant Gardner, of the 7th infantry, was directed with his company to move to the crest of a hill on the left, and watch the movements of the enemy. While executing the order, he became engaged with a strong skirmishing party sent out to meet him, and followed by a large reserve, in all numbering about two thousand. He gallantly maintained his position under a heavy fire, and held them at bay, until he was succored by the rifles and the 1st artillery, who hurried to his assistance. After a short conflict the Mexicans were driven from the position, and closely pursued. They made a second stand on a hill near the Cerro Gordo, under cover of their guns, which rained showers of grape and canister upon the assailants, who pressed on
