From behind this stone wall, remnants of William R. Terrill's shattered brigade and the 21st Wisconsin reformed around Colonel John C. Starkweather's veteran 1st Wisconsin Infantry and were soon reinforced by 814 men of the newly formed 121st Ohio from Colonel George P. Webster's brigade. Bringing all available firepower to bear, they stopped Benjamin F. Cheatham's Confederate division, and after a vicious firefight the Union troops, led by the 1st Wisconsin, counterattacked, drove the exhausted Confederates back, captured a Confederate regimental flag, and recovered all of the lost cannons under covering fire from their comrades. This final action ended the fighting on the Union left flank, and the position was held until almost midnight before the defenders retired to a new line farther to the rear. The cost was severe: of the ten regiments that suffered worst at Perryville, four fought here at this wall; on the Confederate side, the 1st Tennessee lost 57 percent, the 27th Tennessee lost 51 percent, and the 4th and 9th Tennessee each lost 50 percent, while on the Union side the 1st Wisconsin lost 47 percent. The remnants of this wall are all that remain of the Western High Watermark of the Confederacy, where in its farthest push north into Union territory a large Confederate force was stopped and beaten back and, except for smaller raids, never again reached so far north. The captured Polk Pattern flag, long thought to have belonged to the 1st Tennessee Infantry, is now believed to have belonged to the 27th Tennessee Infantry and is now at the Tennessee State Museum.