The Texas National Guard Outstanding Service Medal honors Texas National Guard members or members of other military bodies who carry out exemplary service on behalf of Texas, as determined by the Adjutant General.
The Texas National Guard is composed of the Texas Army National Guard and the Texas Air National Guard. The Army component dates back to a militia established by Sam Houston in 1835; it currently numbers approximately 19,000 and operates 117 armories. The Air component, headquartered in Austin, traces back to the 111th Aero Squadron formed in 1917 in support of World War I efforts.
The ribbon features an alternating pattern of five gray and five yellow vertical stripes.