Marilyn,
I've been a serious student of this engagement in the past, as both Ken Martin and I are double first-cousins and members of the Cherokee Nation of Oklahoma, I always take a special interest in battles where Native-Americans participated. A few years ago, I compiled and submitted the following "Order of Battle" for the First Battle of Newtonia, MO to an online site at http://www.fortunecity.com/victorian/pottery/1080/newtonia_mo_29sep62.htm .
I'm including this OOB below and am very happy with the accuracy of it. You will note, neither Stand Watie's 1st Cherokee Mounted Volunteers or John Drew's 1st Cherokee Mounted Rifles are included. Bryan's Battalion was the only Cherokee unit present on the Confederate side. Tandy Walker's 1st Choctaw-Chickasaw Mounted Rifles and Sampson Folsom's 1st Choctaw Regiment (Mounted) were present and many believe that the counter attack of Tandy Walker's men saved the day for the Confederates in the morning or first phase of the battle. Sampson Folsom's men fought directly with the Third Indian Home Guard Regiment (Union), also a primarily Cherokee unit with many men from Drew's former Confederate regiment.
Here's the Order of Battle and if you have any further questions or comments, please post them here.
NEWTONIA, MISSOURI
29-30 September 1862
OR-Series I, Volume XIII, Chapter XXV, Pg 18
Union Forces
Army Of the Frontier
1st Division - Brigadier General Frederick Salomon
1st Brigade - Brigadier General Frederick Salomon
Detachment, 2nd Ohio Cavalry (85 men) --- Captain David E. Welch
Detachment, 9th Kansas Cavalry (190 men) --- Colonel Edward Lynde
9th Wisconsin Infantry ( 698 men) --- Lieutenant Colonel Arthur Jacobi
2nd Indian Home Guard (400 men) --- Colonel John Ritchie
Artillery
1 section Mountain Howitzers #--- Lieutenant Henry H. Opdycke
2nd Kansas Volunteer Battery $--- Captain Job B. Stockton
3rd Volunteer Battery %--- Lieutenant John F. Addudell
# = Attached to 9th Kansas Cavalry
$ = Also known as Stockton's Battery
% = Also known as 3rd Kansas Light Artillery
2nd Brigade --- Colonel William Weer
6th Kansas Cavalry Regiment --- Colonel William R. Judson
10th Kansas Infantry Regiment --- Major Henry H. Williams
3rd Indian Home Guard --- Colonel William A. Phillips
Artillery
1st Kansas Volunteer Battery --- Captain Norman Allen
2 12lb Mountain Howitzers *--- Lieutenant Brainard D. Benedict
* Attached to 6th Kansas Cavalry
Brown's Missouri Brigade
(Arrived too late to participate in the battle, but covered the Union retreat)
STRENGTH = 3,500
CASUALTIES Killed Wounded & Missing 350 to 400
Confederate Forces
BRIGADIER GENERAL DOUGLAS HANCOCK COOPER
Indian Brigade - Brigadier General Douglas Hancock Cooper
1st Cherokee Battalion --- Major J. M. Bryan
1st Choctaw-Chickasaw Mounted Rifles --- Colonel Tandy Walker
1st Choctaw Regiment --- Colonel Sampson Folsom
White Troops
Buster's Battalion #--- Lieutenant Colonel Michael W. Buster
1st Texas Partisan Cavalry Regiment $--- Colonel James G. Stevens
31st Texas Cavalry Regiment --- Colonel Tresevant C. Hawpe
34th Texas Cavalry Regiment --- Colonel Almarine M. Alexander
# = Formerly 1st Missouri Cavalry, Clarkson's Battalion
$ = later known as 22nd Texas Cavalry Regiment
Shelby's Brigade - Colonel Joseph Orville Shelby
5th Missouri Cavalry Regiment #--- Colonel B. Frank Grodon
12th Missouri Cavalry Regiment $--- Colonel Beal G. Jeans
# Also known as Shelby's Regiment, 1st Missouri Cavalry
$ Also known as 2nd Missouri Cavalry
Artillery
Bledsoe's Battery, 2nd Missouri Field Artillery --- Captain Joseph Bledsoe
Howell's Battery, 11th Texas Field Artillery --- Captain Sylvanus Howell
STRENGTH = 4,000
CASUALTIES Killed 12 Wounded 63 Missing 3