Thomas H. Breece, soldier of the Republic of Texas, joined a company of New Orleans Greys in New Orleans and marched with his comrades to San Augustine and Nacogdoches, where the battalion was officially organized. Breece was elected captain. His lieutenants were John J. Baugh and George Washington Main. According to a circular printed in Nacogdoches during the time of their visit, the men of Breece's company were "mostly athletic mechanics, who have abandoned their homes and lucrative employments for the disinterested purpose of sustaining the righteous cause of freedom. Their very appearance must convince every Texian that they will either `do or die.'"
Breece and his fifty-four-man company served at the siege of Bexar, December 5–10, 1835, where they took part in the capture of the Veramendi Palace (see VERAMENDI, JUAN MARTÍN). After the battle the company was disbanded, and the men were dispersed into other companies. Many of them were killed with William B. Travis at the Alamo, James W. Fannin at Goliad, or Francis W. Johnson and James Grant on the Matamoros expedition. Breece was saved, however, by Sam Houston's order of December 21, 1835, from Washington-on-the-Brazos, to proceed "to whatever point you may deem best for the interest of the service & there recruit as many men as you possibly can." Breece was then to report to Copano or Matagorda by March 1, 1836.
For his service Breece received a bounty warrant for 640 acres, which he apparently sold to Jacob De Córdova. A Thomas H. Breeze, probably the same man, was elected justice of the peace of the Sixth District at Harrisburg on February 4, 1839. The 1840 census of the Republic of Texas listed Breece as a resident of Harris County and the possessor of one watch and one clock. By February 1, 1851, he had died, and a Henry J. Breece had been named executor of his estate.