Introduction

The countless commands of "double canister" shouted along the blue lines reinforce the belief that artillery was critical in repulsing the Confederates and securing Union victory on July 3, 1863.

Two of the divisions in Pickett's Charge were reduced to mere fragments. In front of the Union line, 20 fallen battle flags lay in a space of 100 yards square. Singly and in little clumps, the remnants of the gray columns that had made the magnificent charge of a few minutes earlier now sullenly retreated across the fields toward the Confederate lines. Lee, who had watched anxiously from Spangler's Woods, now rode out to meet his men. "All this has been my fault," he said to General Wilcox who had brought off his command after heavy losses. "It is I that have lost this fight, and you must help me out of it in the best way you can." And again that night, in a moment of contemplation, he remarked to a comrade, "Too bad! too bad! Oh! too bad!"

The three-day Battle of Gettysburg fought in July 1863, was the thundering climax of Lee's second invasion of the North in less than a year. A portion of the Confederate Army of Northern Virginia had stumbled upon a cavalry detachment of Union general George G. Meade's Army of the Potomac near the small Pennsylvania crossroads on July 1. There troops under A. P. Hill and Jubal A. Early routed hastily called-up Union reinforcements and sent them scurrying back through town and onto a fishhook-shaped line of hills to the south and southwest. This first day of fighting resulted in heavy losses for both sides, but it was Lee's best chance for victory and he failed to capitalize on it. By the next day, much of the Army of the Potomac had arrived and Lee's odds were longer. He simultaneously hurled James Longstreet's corps against the Union left and Richard S. Ewell's against the right, on Culp's Hill. In vicious fighting, which included the desperate defense of the rocky hill known as Little Round Top, Union troops held firm, but barely. On July 3, Lee was determined to launch one last attack, this time against the center, but Meade, in a council of war the night before, had accurately predicted Lee's plan for the day.

Summary

Pickett's Charge was the pinnacle of the Battle of Gettysburg (1863), and one of the most famous infantry attacks of the American Civil War (1861–1865). Lasting about an hour on the afternoon of July 3, 1863, it pitted 12,000 Confederates—including three brigades of Virginians under George E. Pickett—against half that number of Union troops. On July 2, Robert E. Lee had unsuccessfully attacked the Union flanks; in what even some of his own men perceived as a desperate gambit, he now attacked the center, asking his troops to cross an open field nearly three-quarters of a mile long. They were bloodily repulsed, losing half their number.

There were 459 infantry and cavalry regiments and 132 artillery batteries that participated in the Battle of Gettysburg, representing nearly 165,000 Union and Confederate soldiers. Although battle losses are difficult to ascertain because of incomplete records, the general consensus for total Union and Confederate casualties -- killed, wounded, missing, and captured -- is 51,000.

Among 90,000 effective Union troops and 75,000 Confederates, there were approximately 51,000 casualties. The Army of the Potomac lost 3,155 killed, 14,529 wounded, and 5,365 captured or missing. Of the Army of Northern Virginia, 3,903 were killed, 18,735 wounded, and 5,425 missing or captured. (Battle of Gettysburg : Strength of Union and Confederate Armies.)

If Chancellorsville was arguably Lee’s finest battle, Gettysburg was clearly his worst; yet the reversal did not unnerve him or reduce his effectiveness as a commander. The invasion had patently failed, and on July 4 he began to retreat toward the Potomac. As that river was flooded, it was several days before he was able to cross. President Lincoln, naturally pleased over Meade’s defensive victory and elated over Grant’s capture of Vicksburg, thought the war could end in 1863 if Meade launched a resolute pursuit and destroyed Lee’s army on the north bank of the Potomac. But Meade’s own army was too mangled; and the Union commander moved cautiously, permitting Lee to return safely to Virginia on July 13. It was Lee's second and final invasion of the North.

Artillery and Cannon

Those who fought at Gettysburg with rifles and carbines were supported by nearly 630 cannon—360 Union and 270 Confederate. About half of these were rifled iron pieces, all but four of the others were smoothbore bronze guns. The same types of cannon were used by both armies.

Almost all of the bronze pieces were 12 pounders, either howitzers or "Napoleons." They could hurl a 12-pound iron ball nearly a mile and were deadly at short ranges, particularly when firing canister. Other bronze cannon included 24 pounder howitzers and 6 pounder guns. All types are represented in the park today, coated with patina instead of being polished as they were when in use.

Most of the iron rifled pieces at Gettysburg had a 3-inch bore and fired a projectile which weighed about 10 pounds. There were two types of these—3-inch ordnance rifles and 10 pounder Parrotts. It is easy to tell them apart for the Parrott has a reinforcing jacket around its breech, The effective range of these guns was somewhat in excess of a mile, limited in part because direct fire was used and the visibility of gunners was restricted.

Two other types of rifled guns were used at Gettysburg—four bronze James guns and two Whitworth rifles. The Whitworths were unique because they were breech loading and were reported to have had exceptional range and accuracy. However, their effect at Gettysburg must have been small for one was out of action much of the time.

These artillery pieces used three types of ammunition. All cannon could fire solid projectiles or shot. They also hurled fused, hollow shells which contained black powder and sometimes held lead balls or shrapnel. Canister consisted of cans filled with iron or lead balls. These cans burst apart on firing, converting the cannon into an oversized shotgun.

Weapons influenced tactics. At Gettysburg a regiment formed for battle, fought, and moved in a two rank line, its men shoulder to shoulder, the file closets in the rear. Since the average strength of regiments at Gettysburg was only 350 officers and men, the length of a regiment's line was a little over 100 yards. Such a formation brought the regiment's slow-firing rifles together under the control of the regimental commander, enabling him to deliver a maximum of fire power at a given target. The formation's shallowness had a two-fold purpose, it permitted all ranks to fire, and it presented a target of minimum depth to the enemy's fire.

Four or five regiments were grouped into a brigade, two to five brigades formed a division. When formed for the attack, a brigade moved forward in a single or double line of regiments until it came within effective range of the enemy line. Then both parties blazed away, attempting to gain the enemy's flank if feasible, until one side or the other was forced to retire. Confederate attacking forces were generally formed with an attacking line in front and a supporting line behind. Federal brigades in the defense also were formed with supporting troops in a rear line when possible. Breastworks were erected if time permitted, but troops were handicapped in this work because entrenching tools were in short supply.

Like their infantry comrades, cavalrymen also fought on foot, using their horses as means of transportation. However, mounted charges were also made in the classic fashion, particularly in the great cavalry battle on July 3.

Cavalry and infantry were closely supported by artillery. Batteries of from four to six guns occupied the crests of ridges and hills from which a field of fire could be obtained. They were usually placed in the forward lines, protected by supporting infantry regiments posted on their flanks or in their rear. Limbers containing their ammunition were nearby. Because gunners had to see their targets, artillery positions sheltered from the enemy's view were still in the future,

Aftermath

Both Union and Confederate forces were too exhausted for further attacks. Both sides had fought hard and with great valor. Among 90,000 effective Union troops and 75,000 Confederates, there were approximately 51,000 casualties. The Army of the Potomac lost 3,155 killed, 14,529 wounded, and 5,365 captured or missing. Of the Army of Northern Virginia, 3,903 were killed, 18,735 wounded, and 5,425 missing or captured.

Lee, as he looked over the desolate field of dead and wounded and the broken remnants of his once-powerful army still ready for renewed battle, must have realized that not only was Gettysburg lost, but that eventually it might all end this way. Meade did not counterattack, as expected. The following day, July 4, the two armies lay facing each other, battered and torn.

Late on the afternoon of July 4, Lee began an orderly retreat. The wagon train of wounded, 17 miles in length, guarded by Imboden's cavalry, started homeward through Greenwood and Greencastle. At night, the able-bodied men marched over the Hagerstown Road by way of Monterey Pass to the Potomac. Roads had become nearly impassable from the heavy rains that day, hindering the movements of both armies. Meade, realizing that the Confederate Army was actually retreating and not retiring to the mountain passes, sent detachments of cavalry and infantry in pursuit and ordered the mountain passes west of Frederick covered. Lee, having the advantage of the more direct route to the Potomac, reached the river several days ahead of his pursuers, but heavy rains had swollen the current and he could not cross. Meade arrived on the night of July 12 and prepared for a general attack. On the following night, however, the river receded and Lee crossed safely into Virginia. The Confederate Army, Meade's critics said, had been permitted to slip from the Union grasp.