The Matamoros Expedition was a planned 1836 invasion of the Mexican port town of Matamoros by rebellious Texians. As the Mexican government transitioned from federalism to a centralized government in 1835, many federalists offered armed opposition. In Mexican Texas, settlers launched a full rebellion, known as the Texas Revolution, in October. By the end of the year, the Texians had expelled all Mexican soldiers from their territory. Confident that there would be no more fighting within their lands, Texans began looking for ways to extend the fight.