This should get you started. Just type the subject into your computer "search engine" and you'll get stuff like the following:
37th Arkansas Infantry Regiment
Organized in Pope County by individual companies throughout March through June of 1862 as the 1st Trans-Mississippi Infantry; and organized as the 29th Arkansas Infantry Regiment upon its acceptance into Confederate service on June 6, 1862 under the command of Colonel Joseph C. Pleasants. Field Officers were Lt. Col. Jeptha C. Johnson and Major John A. Geoghegan. Renamed as the 37th Arkansas Infantry regiment in the summer of 1862. Initially assigned (along with the 34th, 35th, and 39th Arkansas and Chew's Arkansas Sharpshooter Battalion) to form BG James F. Fagan's brigade in Shoup's Division in MG Thomas Hindman's 1st Corps of the Army of the Trans-Mississippi.. The brigade fought in the battle of Prairie Grove on December 7-8, 1862. After the retreat from Prairie Grove to Van Buren, On July 4, 1863, the brigade and the 37th Arkansas served in the attack on the federal post at Helena, Arkansas, and subsequently in the defense of Little Rock in September, 1863. The brigade, now under the command of BG A.T. Hawthorn, and composed of the 37th, 34th, and 35th Arkansas regiments, spent the winter of 1863 southwest of Little Rock, and then was sent south with General Churchill's Arkansas Infantry Division to Shreveport, Louisiana in the early spring of 1864 to assist General Kirby Smith's army in countering Union General Nathaniel Banks' advance along the Red River. After fighting in the battle of Pleasant Hill, Louisiana, Churchill's Division and Kirby Smith then marched back to Arkansas to assist General Price in dealing with the other half of the Red River campaign, Union Gen'l Frederick Steele's Camden Expedition moving southwest from Little Rock. The Division and Hawthorn's Brigade arrived in time to join the pursuit of Steele's army as it retreated from Camden, and join in the attack on Steele as he tried to cross the Saline River at Jenkins' Ferry on April 30, 1864. Gause's Brigade returned to the vicinity of Camden following Jenkins' Ferry, and saw no substantial combat for the remainder of the war. The regiment ultimately surrendered with Kirby Smith's army on May 26, 1865.

Also Known As: 29th Arkansas Infantry Regiment; 1st Trans-Mississippi Infantry Regiment.