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Some of the Civil War's most iconic encounters were heavily influenced by Army Engineers -- whether by commanding armies, fortifying strategic locations, or shaping the outcomes of battles. These are some of the battles and campaigns where engineers played pivotal roles.
The Defenses of Washington
"No Heroism Can Avail: Andrew A. Humphreys and His Pennsylvania Division at Antietam and Fredericksburg." Published in Army History, Summer 2010.
"Nothing but the Spirit of Heroism: Andrew A. Humphreys at Chancellorsville and Gettysburg." Published in Army History, Summer 2013.
The Savior of Little Round Top: Gouverneur K. Warren on the Second Day of Gettysburg