John G. Mitchell's brigade on McCook's right suffered similar losses. After ferocious hand-to-hand fighting, the Union troops dug in across from the Confederates, ending the fighting around 10:45 a.m. Both sides nicknamed this place the "Dead Angle." To the right of Davis's division, Maj. Gen. John W. Geary's division of Maj. Gen. Joseph Hooker's XX Corps advanced, but did not join in Davis's attack. Considerably farther to the right, however, was the site of the only success of the day. Schofield's army had been assigned to demonstrate against the Confederate left and he was able to put two brigades across Olley's Creek without resistance. That movement, along with an advance by Maj. Gen. George Stoneman's cavalry division on Schofield's right, put Union troops within of the Chattahoochee River, closer to the last river protecting Atlanta than any unit in Johnston's army. Aftermath Sherman's armies suffered about 3,000 casualties in comparison to Johnston's 1,000. The Union general was not initially deterred by these losses and he twice asked Thomas to renew the assault. "Our loss is small, compared to some of those [battles in the] East." The Rock of Chickamauga replied, however, "One or two more such assaults would use up this army." A few days later Sherman coldly wrote to his wife, "I begin to regard the death and mangling of couple thousand men as a small affair, a kind of morning dash." Kennesaw Mountain was not Sherman's first large-scale frontal assault of the war, but it was his last. He interrupted his string of successful flanking maneuvers in the Atlanta campaign for the logistical reasons mentioned earlier, but also so that he could keep Johnston guessing about the tactics he would employ in the future. In his report of the battle, Sherman wrote, "I perceived that the enemy and our officers had settled down into a conviction that I would not assault fortified lines. All looked to me to outflank. An army to be efficient, must not settle down to a single mode of offence, but must be prepared to execute any plan which promises success. I wanted, therefore, for the moral effect, to make a successful assault against the enemy behind his breastworks, and resolved to attempt it at that point where success would give the largest fruits of victory." Kennesaw Mountain is usually considered a significant Union tactical defeat, but Richard M. McMurry wrote, "Tactically Johnston had