Instead of retreating hastily to Victoria, Fannin spent
March 18 taking "the necessary measures for a retreat in accordance with the resolution of the officers in council last evening." He and his men had no intention of making a hurried retreat, nor any apparent concern for their situation. The men were still ready for a fight, and most, including their commander, little esteemed the prowess of their enemy.
Urrea, knowing Fannin's intentions, dispatched cavalry units and rancheros to hold the Texans at Goliad, as he had done with Ward at Refugio; and, expecting daily Morales's battalions from San Antonio, was bringing up the remainder of his army to lay siege to Fort Defiance. Morales and his 500 men occupied their assigned position on Manahuilla Creek about three miles north of Goliad on March 17; Urrea reached the San Antonio River the same day and joined Morales the next. The Mexican army now totaled at least 1,400 men, excluding the 200 rancheros.
Horton had discovered Morales's battalions during a scouting mission on March 17, at which time a council among Fannin and his officers determined to retreat the next morning. At that time Urrea's advance cavalry appeared, and Horton, sent to chase them, tired his horses. Fannin, thinking these advance units were the whole of Urrea's army, assumed Fort Defiance would soon be put under siege and so kept the garrison on alert, ordered the buried cannons dug up and remounted, and the village of La Baha burned. The oxen, sole means of removing artillery, supplies, munitions, and baggage, were left standing unfed in the corrals. No retreat was attempted even that night, a delay based on Horton's seeing Mexican troops at the San Antonio River crossing and his concern that the night was too dark to keep to the road.
The retreat, started at midmorning during a heavy fog on
March 19, was late and much confused. Provisions so painfully accumulated were burned; rations for the march were not saved; the unearthed cannons were spiked. Fannin still insisted on bringing nine brass cannons and 500 spare muskets. The carts were heavily loaded, the hungry oxen unruly. Precious time was lost as a cart broke down; the largest artillery piece fell into the San Antonio River and required an hour's labor to retrieve. Even so, the retreat might have been accomplished had Fannin listened to the urgings of Duval, Westover, and Shackelford and pushed his march to the shelter of the woods bordering Coleto Creek. Instead, Fannin halted the column to rest the men and graze the hungry oxen on the broad prairie between Manahuilla and Coleto creeks, thus losing another precious hour. Had this halt been made in the Coleto woods, water, forage for the teams, a defensible position, and superior marksmanship would have multiplied Texan strength.
Fannin and many of his men, contemptuous of Mexican military abilities, did not believe the enemy would follow them. Urrea, skillfully stalking his foe, mistook Fannin's unexplained delay for an intention to stand and fight at Goliad and was not immediately prepared to intercept him; thus he allowed the Texans a two-hour lead, which Fannin unfortunately lost crossing the San Antonio River and grazing the oxen. His resting the teams beyond Manahuilla Creek allowed Urrea to overtake the Texans on the open prairie, and the breakdown of the overloaded ammunition cart then prevented Fannin's little army from reaching the shelter of Encinal del Perdido, a closer, smaller wood toward the north.
Surrounded on the prairie, without food and without water, Fannin's inexperienced command fought the seasoned veterans with whom Urrea had encircled them throughout the long and bloody afternoon of
March 19. The Texans suffered ten deaths and sixty or more wounded; Urrea lost considerably more, perhaps some fifty killed and 140 wounded, but reports vary widely. Fannin's men, unwilling to leave their wounded, chose not to escape under cover of darkness as they might otherwise have done. They were aroused on the following morning by fire of Urrea's artillery, which had arrived with Mexican reinforcements overnight. The Texan commander was convinced of the futility of continuing the fight and the necessity of seeking surrender terms, especially since his men were huddled helplessly in improvised trenches, were without food, and had no water for the wounded. By order of
el presidente, Santa Anna, and by congressional decree, however, Urrea could offer no terms other than unconditional surrender (
see COLETO, BATTLE OF).
Horton and about thirty mounted men had gone forward to hold the Coleto crossing before the fighting began on
March 19. They were not included in the capitulation, having escaped after attempting to break through Mexican lines; they returned to the edge of the timber and eventually retreated to Victoria. Horton could see no useful purpose in adding his men to the general sacrifice. His comrades did expect that he would bring reinforcements the next morning, but finding Victoria virtually deserted-Dimmitt, Linn, and White had since departed-Horton continued on to Gonzales, though he made no attempt to hold that place and await Ward's men, who were thought to be retreating from Refugio.
Ward, having fed and rested his men at ***an's ranch on March 18, headed for Victoria via the Guadalupe timber. On the nineteenth he heard the sound of Fannin's battle at the Coleto, an estimated ten miles distant, and after losing valuable time trying to join Fannin there, returned to the Guadalupe riverbottom that night. Urrea, knowing that Fannin expected reinforcements and that Ward planned to rejoin his commander at Victoria, already had dispatched the rancheros of Carlos de la Garza and others who knew the land well to prevent Ward from joining Fannin and to pick up stragglers. After Fannin's surrender on March 20, Urrea pressed toward Victoria, where he skirmished with some of Ward's men trying to enter the town. Ward, with the remnants of the Georgia Battalion dispirited, footsore, hungry, and without ammunition, again retreated into the Guadalupe woods. There a number of his men left him, and ten of them eventually escaped.