failure of Hooker to fight Lee in detail, 143, 144;

Lee's invasion of Pennsylvania, 144-146;

Hooker replaced by Meade, 146;

battle of Gettysburg, 147-149;

failure of Meade to pursue Lee, 149-152;

Bragg's invasion of Kentucky, 154;

battle of Perryville, 154;

Buell replaced by Rosecrans, 155;

battle of Stone's River, 155;

Rosecrans drives Bragg out of Tennessee, 156, 157;