In spite of the activities of such Confederate horsemen as Forrest, Morgan, Mosby, and Stuart, Grant and Sherman went ahead with their grand offensives. The main Confederate defenses extended from northwestern Georgia along the eastern edge of the mountains to Winchester, Va., thence southeastward across Virginia through Fredericksburg and Richmond. Early in May both Grant and Sherman struck southward. Sherman, leading over 100,000 veterans, marched toward the key city of Atlanta. Grant, with an Army of the Potomac that numbered 118,000 men, retraced Hooker’s steps through the Wilderness in a new “On to Richmond” drive. The going proved rough and costly for both generals. Opposing Sherman were Gen. Joseph Johnston and a reorganized Army of Tennessee. Johnston realized that his 53,000 ill-equipped soldiers were no match for a stand-up fight with Sherman’s massed divisions. The Confederate commander therefore resorted to delaying actions and defensive battles while Sherman tried flanking movements and sharp probes in an effort to trap Johnston. [Illustration: In the Federal siege lines around Atlanta, “Cump” Sherman (legs crossed, leaning against a Parrott gun) and his aides posed for this photograph.] By mid-July Sherman had forced Johnston into the trenches of Atlanta. On July 18 President Davis replaced Johnston with Gen. John B. Hood, who, although minus a leg and the use of an arm, had a reputation as a hard fighter. Hood quickly lived up to that reputation. On July 20, two days after assuming command, Hood attacked Sherman along Peachtree Creek. The Southerners were repulsed. Two days later Hood attacked again in East Atlanta. Again the Confederates were hurled back with heavy losses. Hood then strengthened his defenses around Atlanta, and Sherman tightened his siege. Meanwhile, Grant in Virginia had met with a similar stalemate—and at a more terrible cost. Grant encountered no opposition as he started through the Wilderness toward Lee and Richmond. But as the Federal army crept through the tangled undergrowth, Lee’s 60,000 Confederates struck suddenly and viciously. Two days (May 5-6) of savage fighting occurred in which Grant met a bloody checkmate. Yet Grant did not retreat as other generals before him had done. Instead he unfolded his new and radical policy of hammering at Lee while edging closer to Richmond. Grant knew that Lee could not replace his losses, for Southern manpower was all but exhausted. On the other hand, Grant could draw on the vast manpower of the north. With Grant the Civil War was to be a fight to the finish. [Illustration: Bitter fighting in the “Bloody Angle” at Spotsylvania was typical of the action in the six-week Wilderness Campaign of 1864.]