Here is a bit more from the message board archives:
Posted By: Bryan Howerton Date: Saturday, 15 May 2004, at 11:13 a.m.
In Response To: Henry Cathey (Co. A, 8th Ark. Inf.) (Patrick Grant)
Patrick, your John Henry Cathey actually served in Co. K, 30th Arkansas Infantry. This regiment was sometimes known by the alternate designations of 8th Trans-Mississippi Rifles and 8th Arkansas Regiment (but not the "real" 8th Arkansas Infantry, which served east of the Mississippi River).
John Henry Cathey enlisted in Co. K, 30th Arkansas Infantry, at Jacksonport, Arkansas, on August 1, 1862, for three years or the war. He was captured at the Battle of Helena, Arkansas, on July 4, 1863; sent to Alton, Illinois, on July 9, 1863; transferred to Camp Douglas, Illinois, on September 24, 1864; and exchanged at Red River Landing, Louisiana, on May 23, 1865. He was paroled at Jacksonport, Arkansas, on June...
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Francis Marion LuckettPrivate, Company E, 30th Arkansas Infantry, CSA
Born: 1830, Kentucky Died: Oct 1872, Arkansas
Frank enlisted in the 30th Arkansas Infantry on Jun 14, 1862 at Little Rock, AR. Surrendered on May 26, 1865. The 30th Arkansas Infantry was organized on June 18, 1862, Assigned to McRae's Brigade, Hindman's Division, January through February of 1863. Reassigned to Tappan's Brigade under MG Sterling Price in April, 1863 where the regiment fought in the Battle of Helena and in the defense of Little Rock on September 10, 1863. Retreated with Price into southwestern Arkansas, where the regiment was consolidated with the 32nd Arkansas Infantry in December, 1863. Fought throughout the Camden Campaign and at Jenkins' Ferry on April 30, 1864. Consolidated again with Dawson's Infantry Regiment in April, 1864. Remained in service in southwestern Arkansas until surrendered with MG Kirby Smith's army on May 26, 1865.
And from Tom Ezell's former web site on Arkansas regimental histories:
30th Arkansas Infantry Regiment
Organized on June 18, 1862, Assigned to McRae's Brigade, Hindman's Division, January through February of 1863. Reassigned to Tappan's Brigade under MG Sterling Price in April, 1863 where the regiment fought in the Battle of Helena and in the defense of Little Rock on September 10, 1863. Retreated with Price into southwestern Arkansas, where the regiment was consolidated with the 32nd Arkansas Infantry in December, 1863. Fought throughout the Camden Campaign and at Jenkins' Ferry on April 30, 1864. Consolidated again with Dawson's Infantry Regiment in April, 1864. Remained in service in southwestern Arkansas until surrendered with MG Kirby Smith's army on May 26, 1865.
Officers: Col. Archibald J. McNeill. Field Officers: Lt. Col. Casten W. Baldwin; Maj. (later Lt. Col.) Paul M. Cobbs; Maj. Martin Dawson; Lt. Col (later Col.) Robert A. Hart; Maj. Joseph C. Martin; Maj. (later Lt. Col and Col.) James W. Rogan.
Also Known As: 39th Arkansas Infantry Regiment, 5th Trans-Mississippi Infantry Regiment
I suggest that you visit the web site for the Official Records and search for 30th Arkansas and/or McNeill's regiment, etc, etc]. You will then see a list [with links] to references to this regiment within the Official Records.
http://ebooks.library.cornell.edu/m/moawar/waro.html