Over 12,000 Confederates stepped out from the trees and formed up for the long march forward. Waiting for them behind a low stone fence on Cemetery Ridge were about 5,000 Union troops, most of whom belonged to General Winfield Scott Hancock's II Corps. Depending on the source, this was between 2:00 and 3:00 p.m. As they marched forward across the distance, Union artillery killed large numbers of troops. Rifle fire from the Union line was intense. The Union troops used four lines of soldiers. As the line in front fired, they moved back to reload while the next line moved up to fire. Only a few hundred of the Virginians reached the Union line. Within minutes they were dead or dying. Some were captured. The attack lasted about an hour with over 7,000 Confederate soldiers killed. As the remaining Confederate troops retreated, Lee was seen riding his horse saying "this was all my fault". He then told Pickett to rally his division. Pickett famously replied, "General, I have no division."