That body in January 1862 passed a formal act organizing the territory, including in it New Mexico, but in May 1862 the Texans were driven out by a Union force from California.
In 1841 the republic of Texas, claiming that its western boundary was the Rio Grande, sent a force of 300 men to New Mexico to enforce these claims. The Texans reached the frontier in a starved and exhausted condition, were made prisoners by the New Mexican militia, and were sent to Mexico, where after a short term of confinement they were released.
Sibley, commanding a force of about 3800 Texans, marched into New Mexico, fought a successful engagement at Valverde, on the Rio Grande, against Union forces under Colonel, later General, Edward R.
Bancroft, the loyalty to the Union cause resulted " largely from the fact that the Confederate invasion came from Texas, the old hatred of the Texans being the strongest popular feeling of the natives, far outweighing their devotion to either the North or the South."
On the outbreak of the Texan War of Liberation Goliad was garrisoned by a small force of Mexicans, who surrendered to the Texans in October 1835, and on the 10th of December a preliminary "declaration of independence" was published here, antedating by several months the official Declaration issued at Old Washington, Texas, on the 2nd of March 1836.