Danny

I am trying to nail down when Thrall's Battery joined Forrest's Cavalry Corps. You provided me with the notes below.

From the ORs we have a report of

We know that Thrall was with RICHARDSON in the Affair at Yazoo City On March 7, 1864. Even though Richardson was cooperating with Ross and General Lee at Yazoo City, he was assigned to Chalmers' Division of Forrest Command. Part (600) of Richardson's Brigade was at the Battle of Battle of Okolona took place on February 22, 1864 and Richardson's brigade was at Fort Pillow on April 12, 1864. I have an uncited statement that Thrall had joined Forrest by January 25, but I haven't rediscovered the soucrce.

Composition of the army commanded by Lieutenant General Leonidas Polk, C. S. Army, January 20, 1864.*
...
MISCELLANEOUS.
Ruggles' Command.
Brigadier General DANIEL RUGGLES.
Jackson (Arkansas) Light Artillery, Captain James C. Thrall.
Rice's (Tennessee) battery, Captain T. W. Rice.

Numbers 71. Reports of Brigadier General Robert V. Richardson, C. S. Army, commanding brigade, of operations on the Yazoo River.

HEADQUARTERS WEST TENNESSEE BRIGADE,
Benton, Miss., March 7, 1864
MAJOR: On February 23 I received an order from Major General S. D. Lee, commanding cavalry west of Alabama, to move my brigade to Grenada for the protection of the public property at that point and to guard against raids from Yazoo City.
I started from Tampico on the of the 24th, and hearing that evening that the enemy was raiding unrestricted over the country between the Yazoo River and the Mississippi Central Railroad from Greenwood to Lexington, I moved rapidly to surprise and chastise him. I reached Elliott's Station on the evening of the 25th, and preparing three days' rations-leaving my train except my ambulances, taking only my effective men and horses, then numbering 600, and the rifle section of Thrall's battery-...
...
I desire also to commend Captain Thrall and his men and officers for their bravery and good firing on this occasion. The captain was wounded in the city after its capture, standing by his piece, by a sharpshooter of the enemy. Lieutenant C. Adams, my ordnance officer, was also wounded in the city.
I have the honor to be.
R. V. RICHARDSON,
Brigadier-General.
Major HOLT,
Assistant Adjutant-General.

Light batteries in the Department of Alabama, Mississippi, and East Louisiana.
[found in the Official Records among the May 19, 1864 Confederate Correspondence]
...
Forrest's cavalry command- Tupelo,
Morton's battery
Thrall's battery -four 6 lb guns brass
Rice's battery
Walton's battery

GENERAL ORDERS,
HEADQUARTERS FORREST'S CAVALRY,

No. 47. Tupelo, May 24, 1864.
I. The Seventh Tennessee Regiment, Colonel Duckworth, the Nineteenth MISSISSIPPI Regiment, Colonel Duff, and the Eighteenth MISSISSIPPI Battalion, Lieutenant-Colonel Chalmers, will hereafter be known as the Sixth Brigade, and will report for duty to Colonel E. W. Rucker, who will assume command of it. Colonel Rucker will act under verbal instructions from these headquarters.
II. Captain J. C. Thrall, with his battery, will immediately report for duty to Colonel Rucker, to whose brigade it is assigned.
By order of Major-General Forrest:
W. H. BRAND,
Acting Assistant Adjutant-General.

HEADQUARTERS FORREST'S CAVALRY,
Tupelo, Miss., May 24, 1864.
Colonel E. W. RUCKER,
Commanding Sixth Brigade:
COLONEL: In accordance with orders given, you will proceed at once to Oxford with the Thrall battery, and assume command as a brigade of the Seventh Tennessee, Duff's regiment, and Chalmers' (Mississippi, Eighteenth) battalion. Captain B. F. Saunders, with his company of scouts, now operating in the MISSISSIPPI River bottom, is also ordered to report to you; and Captain W. H. Forrest, commanding squadron of Forrest's old regiment, will also report to you temporarily.
...

Organization of troops in the Department of Alabama, Mississippi, and East Louisiana, commanded by Major General Stephen D. Lee, June 1, 1864.
...
Artillery Forrest's Command.
Hudson's (Mississippi) battery, Lieutenant Edwin S. Walton.
Morton's (Tennessee) battery, Captain John W. Morton, Jr.
Rice's (Tennessee) battery, Captain T. W. Rice.
Thrall's (Arkansas) battery, Captain James C. Thrall.

Organization of troops in the Department of Alabama Mississippi, and East Louisiana, commanded by Major General Stephen D. Lee, C. S. Army, June 10, 1864.
...
ARTILLERY.
Morton's (Tennessee) battery, Captain John W. Morton, Jr.
Rice's (Tennessee) battery, Captain T. W. Rice.
Thrall's (Arkansas) battery, Captain James C. Thrall.