At the beginning of the Civil War, the eastern part of Tennessee was held by the Confederates although the mountaineers were for the most part Union men. The city of Chattanooga was the key to that part of the state and was held by the Confederates. A railroad line into that city ran through Georgia and was occupied by the Southern army. If that could be destroyed, Chattanooga could be cut off from reënforcements and captured by the small body of Union troops which could be risked for that purpose. This road was guarded by detachments of Confederate troops and extended for two hundred miles through Confederate territory and it seemed as if it could not be destroyed by any force less than an army. There was no army that could be spared. One April evening a stranger came to the tent of General O. M. Mitchel, commander of the Union forces in middle Tennessee, and asked to see the general. The sentry refused to admit him unless he stated his name and errand. "Tell the general," said the man quietly, "that James J. Andrews wants to speak to him on a matter of great importance." The sentry stared at him for there were few in the army who had not heard of Andrews, the scout, but fewer still who had ever seen him. No man had passed through the enemy's lines so many times, knew the country better or had been sent more often on dangerous errands. In a minute he was ushered in to where General Mitchel sat writing in the inner tent. With his deep-set gray eyes and waving hair brushed back from his broad, smooth forehead, he looked more like a poet than a fighter. The general noticed, however, that his eyes never flickered and that although he spoke in a very low voice, there was something about him that at once commanded attention. Andrews wasted no time. "General Mitchel," he said, "if you will let me have twenty-four men, I will capture a train, burn the bridges on the Georgia railroad and cut off Chattanooga." "It can't be done," returned General Mitchel. "Well, general," answered Andrews slowly, "don't you think it's worth trying? You know I generally make good on what I set out to do. In this matter if we lose, we lose only twenty-five men. If we win, we take Chattanooga and all Tennessee without a battle." There was a long pause while the general studied the scout. "You shall have the men," he said finally.