American Battlefield Trust’s map of the Battle of Gettysburg - Pickett’s Charge
Around 3:00 p.m. the artillery bombardment ceased and Longstreet ordered the divisions forward. Pettigrew aligned on Pickett’s left, supported by Trimble. About 12,500 total men moved out across open, rolling fields broken by fence lines. Pettigrew and Trimble advanced straight ahead, while Pickett’s brigades shifted their formations to the left as they advanced.
Without cover, the Confederates suffered severe casualties from Federal artillery. The Confederates were slowed by the post-and-rail fences along the Emmitsburg Road. Ohio and New York regiments moved forward and flanked Pettigrew’s lead brigades on their left, forcing the Virginia brigade of John M. Brockenbrough to fall back.