The Engineers at Vicksburg, Part 16 - Map
A map of the battlefield prepared by Union engineers shows Union and Confederate lines at the outset of the battle at the Big Black River Bridge, May 17, 1963. Destruction of the bridge across the river afforded Gen. Pemberton’s army to pull back to Vicksburg after their defeat.

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Photo by: Library of Congress |  VIRIN: 170125-A-YL201-001.JPG