Brazos Valley Burn Bans: The following counties are under a Burn Ban: Brazos, Burleson, Grimes, Houston, Lee, Leon, Madison, Milam, Robertson, San Jacinto, Trinity, Walker, Washington Brazos Valley Burn Bans: The following counties are under a Burn Ban: Brazos, Burleson, Grimes, Houston, Lee, Leon, Madison, Milam, Robertson, San Jacinto, Trinity, Walker, Washington The Army unit currently serving there is the 1st Battalion, 112th Cavalry Regiment, known as Task Force Stallion, from the Texas Army National Guard base in Bryan, according to ArmyTimes.com.