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

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

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

Chevaux de frise, and breast works in the Union fort Sedgwick, called by the Rebels "Fort Hell," showing two wounded soldiers

The Union Line before Petersburg, Va., during the long siege. This gives a good idea of our Line, which was miles in length, and was thoroughly occupied