The 27th Texas Cavalry Regiment, at times also known as Whitfield's Legion or 1st Texas Legion or 4th Texas Cavalry Battalion, was a unit of mounted volunteers that fought in the Confederate States Army during the American Civil War. First organized as the 4th Texas Cavalry Battalion or Whitfield's Legion, the unit served dismounted at Pea Ridge and First Corinth. Additional companies from Texas were added and the unit was upgraded to the 27th Texas Cavalry Regiment or 1st Texas Legion later in 1862. Still dismounted, the unit fought at Iuka and Second Corinth. The regiment was remounted and fought at Holly Springs in 1862, Thompson's Station in 1863, and at Yazoo City, Atlanta, Franklin, and Nashville in 1864. The regiment surrendered to Federal forces in May 1865 and its remaining soldiers were paroled.