Having failed on July 2 to turn either of Meade’s flanks (Culp’s Hill and the Round Tops), Lee decided on the 3rd to assault the Union center. James Longstreet, who would command the attack, wrote later that he told Lee: “General, I have been a soldier all my life. I have been with soldiers engaged in fights by couples, by squads, companies, regiments, divisions, and armies, and should know, as well as anyone, what soldiers can do. It is my opinion that no fifteen thousand men ever arrayed for battle can take that position.” But Lee had made up his mind — and he had already issued the orders. Two divisions from A.P. Hill’s Third Corps and one — Pickett’s — from Longstreet’s First Corps were to make the advance. It’s known as Pickett’s Charge, but more correctly it is the Pickett-Pettigrew-Trimble Charge.
To prepare for the assault — to cripple the Union defenses — Lee order a massive artillery strike. The 163 Confederate cannons began firing at 1:07 PM. The Union artillery returned fire with nearly the same number. The Confederate aim was high and smoke curtained the targets. Little damage was done to the Union infantry. After a time, Union artillery commander Henry Hunt ordered his guns to cease firing — to save ammunition, cool the guns, and lure the rebels forward.
Forward they came, 14,000 men in a formation a mile wide, moving across open fields for three-quarters of a mile. The Union artillery opened on them with shot and shell and ultimately canister (shells filled with metal). At 200 yards, the Union infantry on the Confederate front opened fire, while other Union units moved out to attack both sides of the charge. Of the 14,000 in the advance, perhaps 200 breached the first Union line before being repulsed. Of the 14,000, half did not return.
Lee was defeated and withdrew from Gettysburg. While the war lasted 22 more months, the brief moment when the 200 reached the Union line was considered the high-water mark for the confederacy. Gettysburg totals: 25,000 Union casualties; 28,000 Confederate casualties.