Bomb-proof quarters of Major Strong, at Dutch Gap, Va., July, 1864

Rebel fortifications, north side of the city, Atlanta, Ga.

Rebel fortifications, Atlanta, Ga.

Fort McAllister, on the Ogechee (i.e. Ogeechee) River, Ga.

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

Making coffee. On the lines before Petersburg, Va., 1864

The Thirteen-Inch Mortar "Dictator"

The Union line before Petersburg

Interior of Fort Sedgwick

Bomb proof quarters at Ft. Burnham. The sides and top are 7 feet thick, contains two rooms, sleeping and cooking

Bomb-proofs in the Union Fort Sedgwick, called by the rebel soldiers "Fort Hell"

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

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

Fortifications and bomb-proofs, in front of Petersburgh (i.e. Petersburg), Va

Chevaux-de-Frise in front of the Rebel Works at Petersburgh (i.e. Petersburg), Va.

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.

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

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

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

View from the Union Fort Sedgwick, called by the rebel soldiers "Fort Hell"

Dismantling of the rebel forts after the storming of Petersburgh (i.e. Petersburg), Va.