The garrison hastily crossed the San Antonio River and entered the fortress of the Alamo. One of the officers, Lieutenant Dickinson, galloped in on horseback, with his baby on his arm and his wife behind him. Some beef-cattle grazing around the fort were driven in and the gates were closed. Colonel William B. Travis had succeeded Neill in the command of the fort, which was garrisoned by one hundred and forty-five men. Travis was but twenty-eight years of age; confident, bold, determined, and full of patriotic ardor. Colonel James Bowie was second in command. Among other defenders of the Alamo were Colonel James B. Bonham of South Carolina and David Crockett of Tennessee—“Davy” Crockett, the backwoodsman, bear-hunter, wit, and politician. Crockett had reached San Antonio just before the siege, with a small company of Tennesseeans, and offered his services to Travis. He was a picturesque figure in his fringed and belted buck-skin blouse and coon-skin cap. His long rifle, Betsy, had “spoken” in the war of 1812, and echoed since on many an Indian trail. Its last word was to be spoken at the defense of the Alamo. [Illustration: David Crockett.] The Mission of the Alamo, established in 1703 and several times removed, was finally built, in 1744, on the spot where it now stands. Like the other missions, it was both a church and a fortress. It is on the east side of the San Antonio River, facing the town to westward. The cross-shaped church, slit with narrow windows and partly roofless, stood on the southeast corner of a walled plaza several acres in extent. The other buildings—convent, hospital, barracks, and prison—were within the enclosure. There was also a small convent-yard adjoining the chapel. All of the buildings were of stone; the enclosing walls were built of adobe bricks. The sacristy of the church was used as a powder magazine. The place was defended by fourteen pieces of artillery. Santa Anna arrived in person on the 23d. He took possession of San Antonio town and sent a summons to the rebels in the Alamo for unconditional surrender. Travis received and dismissed the messengers with courtesy; then answered by the mouth of a cannon, “No.” At the defiant boom which stirred the peaceful air of the valley, a blood-red flag was placed upon the tower of San Fernando, proclaiming “no quarter”; and a thunder of guns opened the attack. The besiegers at first made little headway. If they ventured across the river they were within reach of those unerring rifles they had such cause to dread. It was the third day before they succeeded in planting a battery between the fort and the bridge.