Only 3 reports were filed for the 5 brigades and 22 regiments that fought in the Sunken Road area -- Gibson, Feltus, and Herbert. Herbert's report wasn't included in the OR.
Other than Walker, I am jot aware of any other secondary account that indicates Anderson stayed in the field for long after his wound. There is also very little agreement as to when his wounding actually took place.
His most recent biographer writes: "Anderson himself fell with a wound to the thigh that toppled him from his horse and took him completely out of action that day after he fainted from loss of blood. Command of the division fell to Brigadier General Pryor, the former Virginia politician whose skills proved unequal to the crisis. Pryor wisely appealed to Longstreet for artillery support, but his direction of the troops otherwise proved too weak and ineffective." [Soldier of the South, p 135]
Hartwig indicates his wound occured as the division was reaching the field, just after he met with Hill. The infantry had not yet reached or had just begun crossing the Hagerstown Pike.
General D.H. Hill's report, a primary source, says Anderson was soon wounded after reporting to him; but by the time Pryor assumed command of the division, "the Yankee fire had now nearly ceased;" however long the interval. Best potential evidence I've seen is the report of Gen. R.E. Rodes, who noted seeing some of Pryor's brigade taking cover behind him, rather than moving onto the front line. He says this was just as the murderous firing was growing "desultory and slack"... He found Gen. Pryor within moments, who directed them to their correct position in front.
Veterans of Mahone's brigade, including the Sixth Virginia, were attached to Pryor's brigade during the battle, recalled that in advancing to reinforce Hill's line in front, the heavy federal artillery fire struck into them. As a result "some ran forward and reached the line of battle, but the
larger portion sought shelter."
Confederate Staff officer William W. Chamberlain among them recalls on p. 32-33, the specific details of the movement of Pryor's brigade forward, and its getting scattered by heavy artillery fire as it did so...
Also notice of General Anderson's wounding before his division moved up to Hill's line. Chamberlain manned the 6-pounder near the Piper barn, etc. with some men of G.T. Anderson's Georgia Brigade, and at one point positioned about the 14th NC of G.B. Anderson's brigade at one time. Thence back again when he found its original position occupied by General Wright's brigade of R.H. Anderson's division.
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
archive.org
General Longstreet's memoirs, "Manassas to Appomattox," which notes this, observing only "parts" of Anderson's brigades got up on the front line during the emergency. And Pryor was not "advised" of his authority over the whole division upon the evacuation of both Generals Anderson and Wright. Longstreet states thereafter Pryor (who as noted assumed command when the firing lulled) then labored to assemble the brigades "at points most suited to their convenience, in rear of D.H. Hill's brigades."
Ultimately, General Longstreet's official report names General Pryor for particularly distinguished service at "Sharpsburg" alongside General Anderson...
...
Freeman wrote that after Anderson was wounded, his division "ceased to act as a unit," which is evidenced by the way the brigades went into action.
Sounds pretty standard. The troops were all mixed up and intermingled. Hills and Andersons. It's puzzled me why Freeman etc. decide that Anderson's division in the same situation as the others, is somehow ineffective. When Col. Floyd of the 8th Florida came up to the army during the action to join his regiment with Pryor's brigade, Anderson's division, he says he inquired of staff officers for their position, to which he got only the replies:
"No man can, unless by accident, find his brigade in the field..."
Regardless, in the afternoon, Hill reported that it was General Pryor, as commander of Anderson's Division (once advised that he was in command of it apparently), who managed to "gather quite a respectable force" behind the stone wall on the Hagerstown pike, near G.T. Anderson's remnant, when they repulsed the advance of the 7th Maine of Slocum's division, etc.
Generals Lee and Longstreet seem satisfied Anderson's division (a part of it) after the "emergency" of the battle, remained in position (under Pryor), to face the federals opposite until night...
As noted, General Hancock found Pryor in command of the line opposite his front the next day.
I have read Hill's report and, yes, Hill told him to support his position. That is a relatively vague order which could mean many different things. I would imagine there was more spoken that didnt make it into Hill's report.
Not vague in a military way. From Victor's "Military Handbook" (1862), A supporting line supported another line...
The line, and its supports, were best to also have a reserve if possible. There were many units of Lee's army had fought at Antietam without any supports or reserves. Hood's division comes to mind.
Some other period examples. Lord Cardigan of the Light Brigade fame in the Crimea:
From Gettysburg, General Lane notes supporting Longstreet's line in the attack...
The line, and its supports, were best to also have a reserve, which if necessary might cover the flanks, or reinforce the line as necessary. Lee's lines at Antietam were stretched very thin. General Hill lamented that he did not have Anderson's support earlier in the day.
Accounts differ as to whether or not the brigade immediately deployed in line or remained in column while halted.
W.W. Chamberlaine and Hebert of Anderson's division both note the troops were moving toward the bloody lane moving by file/by the right flank, when they were whacked by the artillery fire which much disordered them about the orchard. Hebert notes deploying into line in the cornfield beyond, into action.
While the actions of Richard H. Anderson’s division on September 17, 1862 are generally known, pinning down specifics has always been difficult. Mostly, that is due to the fact that only one after-action report from the entire division (and it is not from Anderson himself) was reproduced in the...
emergingcivilwar.com