Siege of Vicksburg – Sharpshooters in the rifle pits constructed by General Hickenlooper (engraving)

Federal sharpshooters, such as these in Battery Hickenlooper, near the Shirley House, were used to harass their Rebel counterparts, charged with killing members of work parties operating in the Union trenches. (Peter Newark American Picture Archive/Bridgeman Images)

Peter Newark American Picture Archive/Bridgeman Images