troops arrived in early June, they found only 20 families remaining. The area around San Patricio and Refugio suffered a "noticeable depopulation" in the Republic of Texas years. Although the treaty had specified that Urrea and Filisola would return any slaves their armies had sheltered, Urrea refused to comply. Many former slaves followed the army to Mexico, where they could be free. By late May the Mexican troops had crossed the Nueces. Filisola fully expected that the defeat was temporary and that a second campaign would be launched to retake Texas. Aftermath Military When Mexican authorities received word of Santa Anna's defeat at San Jacinto, flags across the country were lowered to half staff and draped in mourning. Denouncing any agreements signed by Santa Anna, a prisoner of war, the Mexican authorities refused to recognize the Republic of Texas. Filisola was derided for leading the retreat and quickly replaced by Urrea. Within months, Urrea gathered 6,000 troops in Matamoros, poised to reconquer Texas. However, the renewed Mexican invasion of Texas never materialized as Urrea's army was redirected to address continued federalist rebellions in other state regions in Mexico. Most in Texas assumed the Mexican army would return quickly. So many American volunteers flocked to the Texian army in the months after the victory at San Jacinto that the Texian government was unable to maintain an accurate list of enlistments. Out of caution, Béxar remained under martial law throughout 1836. Rusk ordered that all Tejanos in the area between the Guadalupe and Nueces Rivers migrate either to east Texas or to Mexico. Some residents who refused to comply were forcibly removed. New Anglo settlers moved in and used threats and legal maneuvering to take over the land once owned by Tejanos. Over the next several years, hundreds of Tejano families resettled in Mexico. For years, Mexican authorities used the reconquering of Texas as an excuse for implementing new taxes and making the army the budgetary priority of the impoverished nation. Only sporadic skirmishes resulted. Larger expeditions were postponed as military funding was consistently diverted to other rebellions, out of fear that those regions would ally with Texas and further fragment the country. The northern Mexican states, the focus of the Matamoros Expedition, briefly launched an independent Republic of the Rio Grande in 1839. The same year, the Mexican Congress considered a law to declare it treasonous to speak positively of Texas.