Face to face with this predicament, the Colonel on September 23rd, called for a volunteer to carry a dispatch to Headquarters, and Grant instantly responded. To reach his destination it was necessary to run the gantlet of the enemy, for every opening from the Plaza was completely exposed to their fire. But trusting in the fleetness of his horse, the young lieutenant leaped into the saddle and, swinging himself down, Indian fashion, on one side of his steed so as to shield himself behind its body, he dashed away on his perilous mission. A roar of muskets greeted him at every corner, but he flashed safely by, leaping a high wall which lay across his path and then, speeding straight for the east end of the town, reached the commanding General and reported the peril of his friends. Meanwhile the Americans began one of the most curious advances ever made by an army, for General Worth, finding that he could not force his troops through the streets leading to the Plaza without great loss of life, ordered them to enter the houses and break down the intervening walls, so that they could pass from one adjoining house to another under cover, directly to the heart of the city. This tunneling maneuver was executed with great skill, and when the walls of the houses nearest the Plaza were reached and masses of men stood ready to pour through the openings into the Square, its astonished defenders gave up the fight and promptly surrendered the city. Chapter VII. -- Captain Lee at the Front Astonishing as General Taylor's success had been, the authorities at Washington decided, largely for political reasons, to appoint a new commander, and three months after the battle of Monterey, General Winfield Scott, the Commander-in-Chief of the United States army, was ordered to the seat of the war. It would be impossible to imagine two officers more utterly different than Taylor and Scott, but each in his own way exerted a profound influence upon the careers of Grant and Lee. Taylor was a rough, uncultivated man, fearless, shrewd and entirely capable, but with nothing to suggest the soldier in his appearance, dress or dignity. On the contrary, he usually appeared sitting slouchily on some woe-begone old animal, his long legs dangling on one side of the saddle, the bridle rein looped over his arm and a straw hat on his head, more like a ploughman than an officer of high rank. Indeed, he seldom donned a uniform of any description, and his only known appearance in full dress occurred during an official meeting with an admiral, when, out of regard for naval etiquette, he attired himself in his finest array. But this effort at politeness was not calculated to encourage him, for the admiral, knowing his host's objection to uniforms, had been careful to leave his on his ship and appeared in civilian attire.