The next movement visible to us was from the Confederate side, whence, with a rapid rush, came the command of General Hood,—Texas, Georgia, and Alabama men. In a few minutes they had crossed the open field in the face of our guns, and although a portion of their line faltered, yet another pushed even up to the line of our batteries, silencing almost every gun. Mansfield had fallen, but his men were there, and their rattling volleys showed that the enemy could get no foothold in the wood, just in the edge of which the line of smoke hung steadily an hour or more.
At nine o’clock the contest was for the moment ended by the advance of Sedgwick’s division of Sumner’s corps, before which the southern troops broke and fled over the glade to the cover opposite, and again our guns opened upon their shelter.
Sedgwick’s division was the right of Sumner’s corps, and now between it and us moved up from the Antietam the divisions of Richardson and French, his left and centre. Unobserved by the enemy, we could see them forming for the attack, and we watched with intense interest their steady progress diagonally across our front. As they crossed the summit of each rise, they came under the fire of the rebel batteries; but our twenty-pounders playing over their heads, kept the rebel lines crackling with shells, to the comfort of our friends and the confusion of their foes. In each depression of the land Richardson and French halted to dress their ranks, and then moved quickly on; and so they won closer and closer to the enemy, until they were so near that the guns of our batteries could not help nor those of the enemy hurt them. Here, in a field of standing corn, they came upon the infantry of General Hill, who, protected by fences and road cuttings, opened a galling fire. Receiving but not answering this, Sumner’s divisions, aided by horse batteries from Porter’s corps, dashed forward and secured these defences for themselves, driving out the Confederate infantry on the right, capturing or slaying them in the sunken road on the left. For a few brief minutes the carnage was terrific.
Here Richardson and French, not without frequent contests, held their advanced position all the day. We have described their movement as if it had been an isolated one; but it was not so. The right of Sumner’s corps, the division of “Old John” Sedgwick, was carrying everything before it. It swept in solid form across the glade, and pushed out of our sight into and through what we have called the western wood, and into the open land beyond.
The violence of this attack outran discretion and the division found itself out in the open fields with no support on either flank, and met by fresh troops of the enemy. Falling slowly back it came into line with the division of General French, but leaving a great gap between, into which the advancing forces of the enemy hastened to drive a cleaving wedge.
It was now one o’clock P. M., and we held the whole of the right and centre of General Lee’s original position, but not firmly. Besides the danger at the gap between Sedgwick and French, the latter was short of ammunition and Sedgwick’s right was feeble.
At this time, most opportunely, McClellan ordered forward his reserve, the corps of General Franklin; and that officer dividing his command, closed up the threatened gap, re-inforced French’s line and strengthened Sedgwick’s right, welding the whole to such tough consistency that no further impression could be made. What we had won we held.
Three o’clock in the afternoon and nothing seen of Burnside yet.
The most untutored of those who had watched the varying fortunes of the field could see that if Lee’s right had been attacked while McClellan was thus hammering on his left, either his right or left must have yielded. We had seen troops moving from the one flank to reinforce the other, until it seemed as if none could remain to hold the right. From officers about the headquarters we knew that McClellan, in person, had the night before advanced the division of Burnside’s corps close to the bridge, and that he had told that general to reconnoitre carefully, in readiness for attacking in the morning. We knew that at six o’clock he had been ordered to form his troops for the assault upon the bridge, and that at eight o’clock orders had been sent to carry the bridge, gain the heights, and move upon Sharpsburg.
General McClellan himself looked not more anxiously for movement on the left, than did we who saw the gallant fighting of the right; but five hours had passed before the capture of the bridge by the twin 51sts of New York and Pennsylvania, and since then two more of those priceless hours had passed away. Oh! if Sheridan or our Griffin could but have been commanding there.