A (Supply & Transportation), New Tazewell Troop B(-) (Ordnance), Columbia ("Vikings") Company C (Medical), Knoxville ("Cutter") Det 1, Troop F, Parsons Regimental Fires Squadron (Hickory) Headquarters and Headquarters Troop, Winchester Battery A(-), Maryville ("Animal") Detachment 1 Troop A, Pigeon Forge Battery B(-), Covington ("Bulldogs") Detachment 1 Troop B, Memphis Battery C, Sparta ("Coyote") Troop F(-), Lewisburg (Forerunner) Detachment 1 Troop F, Shelbyville History Formation of predecessor units The Third Brigade of the Tennessee Militia was absorbed into the National Guard of the United States on 25 March 1887 as the 3rd Tennessee Infantry Regiment with headquarters in Knoxville. 1st Battalion was located in Knoxville, and 2d Battalion was located in Chattanooga. In the spring of 1898, the 1st and 2d Battalions were consolidated to form the 6th Tennessee Infantry Regiment. Between 18 and 20 May 1898, the 6th Infantry was re-designated as the Third Tennessee Volunteer Infantry Regiment. Spanish–American War The Third Tennessee was mustered into federal service 18–20 May 1898 at Camp Dewy, Nashville for the War with Spain. The Third Tennessee was deployed to Tampa, Florida and later returned and mustered out of federal service at Anniston, Alabama, on 31 January 1899. It was reorganized in Knoxville in the Tennessee National Guard as the 6th Infantry Regiment. Five years later, the 6th Infantry Regiment was re-designated once again as the Third Infantry Regiment in 1903. Mexican Punitive Expedition On 3 July 1916, the Third Infantry Regiment was mustered into federal service at Nashville and deployed to Eagle Pass, Texas, to take part in the Army's pursuit of the Mexican bandit Francisco (Pancho) Villa along the Mexican and US Border. They returned home and were mustered out of federal service on 14 March 1917. World War I Four months after returning from Texas, on 24 July 1917, the Third Infantry Regiment was mustered into federal service and assigned as an element of the 30th Division. The 30th Division had been called into federal service on 25 July 1917, seven days after designation as a division. On 3 August, the War Department ordered concentration and organization at Camp Sevier, Greenville, South Carolina. On 5 August 1917 the Third Tennessee Infantry Regiment was "drafted" into federal service. Concentration continued throughout August 1917. The 30th Division (The Old Hickory Division named after President Andrew Jackson of Tennessee) was reorganized in accordance with the tables of organization of 8 August 1917. On 12