Lamar Williams sent me the missing quote which is from the book Rebel Brothers: The Civil War Letters of the Trueheart Brothers.

Dear Thomas M. [Joseph]
On Sunday last at noon, when torrents were falling, two Brigades of our Division (Anderson's) Wilcox' old Brig., and Wright's Ga. Brigade, were dispatched from Petersburg defenses to this part of the Confederate line, the enemy having transferred forces hither as tho' he contemplated attempting something out here. 32 We marched three miles and then took the Rich. & Petersburg railroad. I and another M.D. were ordered to take the cars with the troops taking the whole Brig. We disembarked within 1 1/2 miles of Drewry's Bluff at 9 p.m. and took up our line of march, for this point. After marching a short distance, my brother Med. concluded,that he would wait for his horse, which was being ridden through by one of the men. But I declined waiting for mine, as I did not deem it consistent with orders and duty, and determined to make the march on foot. We marched till 4 o'clock next morning to reach this place. Being unused to marching of late, and encumbered with
heavy cavalry boots, I was much used up by the trip through the rain. Became so fatigued and sleepy, that my oilcloth one of the best I ever saw, and to me in the field, an invaluable article [was lost] August 18th—Just here the battle opened suddenly and tremendously upon us. The shell and Minnies came so thick and fast I had to stop writing and look to other more important items in soldierlife's drama.
I lost that oilcloth, it slipped from my grasp as I was walking asleep I suppose. The command was halted at 4 o'clock in the morning, and told to get what sleep they could—wet to the skin I lay down in the rain without covering or anything between me and the ground and slept soundly for 1 or 2 hrs., when we were roused to resume the march to take position on the line; not more than 1/3 or 1/2 the men and officers of the line had been able to keep up and 10 o'clock a.m. found them still
stretched along the road for many a mile fast asleep. But why do I talk thus at length of such an every day occurence, of the hard march! 'Tis not because I have not endured my share of them but because I was all unaccustomed to walking on such marches of late and this one made a deep, a painful impression upon me. I was stiff and sore at the time of writting. I said the battle opened tremendously with shell and Minnies falling thick, Genl R E Lee and Staff were standing on horseback near by. 33 He seemed restless, rode up & down the road, put his hand to his ear frequently to catch the direction, etc. of the sound of strife. He well knew that our force over here on the left was small, that at the part of the line thus suddenly and vigorously assaulted, the troops were strung out in one rank. His fears were not ill
founded. The enemy had massed a heavy force under cover of a large body of woods, and near this line, and suddenly hurled them on this weak part of our extended line. After a brief, (and spiritless) resistance Wright's old Brigade gave way and fell back in confusion with considerable loss in killed, wounded and more especially in prisoners. Gallant Brig. Genl Girrady, but a few days before promoted from a Captaincy, was among the lamented dead. He was shot down while trying to rally and lead his men against the foe. These bull dog Alabamians had a large share in driving the exultant Yankees back and retaking the lost works. Not more than 3/4 of an hour did the vile wretches hold them, and deadly enough did pay for that 3/4 of an hour, as the battleground thickly strewn with their dead and wounded, negroes and
Yankees lying side by side, told in words traced in blood. Our loss in prisoners was equal to or even surpassed theirs, but theirs in killed and wounded greatly exceeded ours.
Genl Lee busied himself in rallying and reassuring the troops, who had been driven back. To some he used words of gentlest kindness, praising them for what they had accomplished; others he sternly upbraided and ordered them back into the fight. His presence and words seem to exert magical influence on both classes. He
addressed them thus, "my friends, rally, and go back and help your fellow soldiers, drive those people back—we must drive them back, and retake those works." To wounded men and officers he was all tenderness and sympathy. For some time I was the only Surgeon thus near the line of battle at this point (on the Darbytown road) and as the wounded arrived and their injuries being cared for the Genl would ride up and inquire for their welfare and ordered me to dress wounds and send off
out of danger, in ambulances all, without regard to what particular Brigade, etc. they belonged to. Time and again he called me up to examine men, who were going to the rear under plea of sickness & wounds—or again he would make me do rear guard duty sending me hither and thither to halt and turn back men who were running out of the fight (this was in the beginning of the engagement before the wounded began to come out). One poor fellow was brought out with his leg carried away justbelow the knee by a grape shot; another with one arm taken off near the shoulder. Being much exposed to the fire I did not deem it prudent to keep the lives of these men thus exposed, only to apply dressing, that would be removed on their arrival at the hospital, a mile & a half distant so after administering brandy to one with the lost leg (he
was nearer dead then from shot and there was no danger from hemorhage) and taking measures to prevent hemorrhage in the one with the lost arm, I sent them off as speedily as possible to the Hospital. The one with the leg shot off died in 10 minutes after he started, and his corpse was laid on the roadside. The other went on and was doing well when I last heard from him. The Genl met the ambulance and after getting past me turned back and asked me if I had seen "a man with his arm shot off," I told him I had just sent him off to the Hospital, "The wound had no bandage on it, Doctor," rejoined the Genl. I explained the reason to him, he seemed satisfied and rode on. I cite this to show the interest he takes in the wounded of his Army, and how closely he observes what is going on around him.
My latest from Henry, forwarded to Fanny in a recent letter from me tells me that he is well. Mail communication 'twixt this and the lower Valley of Virginia are so infrequent and uncertain, that I seldom hear from the dear fellow nowadays.
Tell Sister M[ary] that her most welcome letter of March 10th, 1864 came to hand safely today, will reply in a few days. Ask her for my sake to abbreviate the name of my namesake by dropping the T. Charles Henry is enough for all purposes, practical and ornamental. Tell her not to fail to do this if she doesn't I shall certainly disinherit the young man. Love to Sister M. [Mary], and your mother. Kiss the children for me, my kindest remembrances to my old, faithful friend Mag.
Affectionately your brother,
C.W. Trueheart