The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 3: The Decisive Battles.
Francis Trevelyan Miller, Ed.

General Butler after Drewry's Bluff.

Butler, after his disastrous repulse at Drewry's Bluff, threw up strong entrenchments across the neck of the bottle-shaped territory which he occupied between the Appomattox and the James. That was exactly what Beauregard wanted, and the Confederate general immediately constructed field works all along Butler's front, effectually closing the neck of this “bottle.” Here Butler remained in inactivity till the close of the war. He built the elaborate signal tower seen in the picture so that he could observe all the operations of the Confederates, although he could make no move against any of them. Generals Gilmore and “Baldy” Smith both urged upon Butler the laying of pontoons across the Appomattox in order to advance on Petersburg, the key to Richmond. But Butler curtly replied that he would build no bridges for West Pointers to retreat over.

Butler's signal tower

The lookout

The thirteenth New York heavy artillery idling in winter quarters at Bermuda hundred Butler “bottled up”