1st Regiment Partisan Rangers was formed during the summer of 1862 with about 1,000 men. Many were from San Augustine and Paris. The unit served in D. H. Cooper's, Major's, and Hardeman's Brigade in the Trans-Mississippi Department. It fought at Prairie Grove, skirmished in Louisiana, and fought in the conflicts at Mansfield and Pleasant Hill. Later it continued the fight in Louisiana and in May, 1865, disbanded. The field officers were Colonel Walter P. Lane, Lieutenant Colonel R. P. Crump, and Majors A. D. Burns and W.P. Saufley.