US Army Corps of Engineers
Engineer Research and Development Center Website

Historic Image of Confederate River Batteries
Powerful and formidable batteries such as this Brooke made Vicksburg “the Gibraltar of the Confederacy,” and it would prove a tough nut to crack.

Download Image: Full Size (0.14 MB)
Photo by: Library of Congress |  VIRIN: 160825-A-YL201-002.JPG