Main Confederate assaultNine brigades under Pickett, Pettigrew and Trimble. Modern estimates often fall around 12,000–13,000, but historians disagree. Wilcox and Lang’s later advance requires a separate record.Virginia Humanities · numerical uncertainty ↗
Union central defenseHartwig estimates roughly 6,500 effectives in the initial central infantry line. That narrower scope is not the same as everyone who could reinforce it, the supporting batteries, or their personnel.NPS seminar · defenders and reserves ↗
Federal infantryA dark-blue four-button sack coat, sky-blue trousers and forage cap form the representative enlisted profile. Company officers use a longer coat and sword. Gold bars on Federal company-grade shoulder straps follow the period system; modern silver lieutenant bars would be wrong.Army Center of Military History ↗1861 U.S. uniform regulations ↗
Confederate infantryShort jackets, subdued gray and brown shades, forage caps and felt hats. The displayed variation illustrates documented garment types; it is not a known distribution within a particular regiment.NPS · interpreting Gettysburg photographs ↗Confederate uniform regulations ↗
Equipment placementCartridge box at the right rear, haversack and canteen at the left, cap pouch on the waist belt and bayonet scabbard. A full-length percussion long arm replaces the short, generic “game rifle.”NPS Gettysburg · equipment arrangement ↗NPS · period weapons ↗
Unit exceptions remain essentialThe 12th New Jersey’s .69-caliber smoothbores cannot be replaced indiscriminately with rifled muskets. Selected rifle companies in other units require their own profiles. Regimental colors, exact weapons inventories and garment distributions still need unit-level evidence.NPS · Hays’s division and the 12th New Jersey ↗