Interior of the Union Fort Sedgwick, called by the rebel soldiers "Fort Hell," showing Union soldiers on the breastworks

Interior of the Rebel Fort Mahone, called by the soldiers "Fort Damnation", showing gabions, "chevaux de frise", &c

Interior of the rebel works in front of Petersburgh (i.e. Petersburg), Va. View taken April 3, 1865

View from the parapet of the rebel works in front of Petersburgh (i.e. Petersburg), Va., showing gabions, bombproofs, "chevaux de frise" and rifle pits in the distance

Interior view of the Rebel works in front of Petersburgh [sic], Va. showing ammunition boxes, canteens and soldiers' effects scattered around. This view was taken the morning after the storming of Petersburgh, Va., April 2d, 1865

Interior of the rebel works in front of Petersburgh (i.e. Petersburg), Va. View taken April 3, 1865

Interior of the Union Fort Sedgwick, called by the rebel soldiers "Fort Hell," showing Union soldiers on the breastworks

Ditch and "Cheavaux de frise" in front of the Union Fort Sedgwick, called by the Rebel soldiers "Fort Hell"

Ditch and "Cheavaux de Frise" in front of the Union Fort Sedgwick, called by the rebel soldiers "Fort Hell"

Breastworks and "Cheavaux de Frise" in the Rebel Fort Mahone, called by the soldiers "Fort Damnation"--Lieut. J.B. Krepps, 2d Penn. Veteran Artillery and comrades viewing the works

Rebel breastworks in front of Petersburgh (i.e. Petersburg). The small mounds with chimneys are the soldiers' quarters, under ground

Union picket line in front of the rebel Fort Mahone, called by the soldiers "Fort Damnation", Richmond, Va.