The Petersburg Project
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    • About Us
  • Blog and Updates
  • Petersburg Panorama 1865
  • Steeples of Petersburg
  • The Mine Explosion and its Crater
  • Petersburg in Pencil and Ink
    • Alfred R. Waud, Special Artist at Petersburg >
      • Waud Drawing of 5th Corps Fortifications
    • William Waud, Special Artist
    • Charles H. Chapin, Special Artist
    • Joseph Becker, Special Artist at Petersburg
    • Edwin Forbes, Special Artist at Petersburg
    • Winslow Homer, Special Artist
    • Edward Mullen, Special Artist at Petersburg
    • Andrew W. Warren, Special Artist
    • Enlisted Artists >
      • Charles Wellington Reed
      • Andrew McCallum
      • Francis Knowles
      • James William Pattison
      • Herbert Valentine
      • Howard A. Camp
  • Petersburg Photographs --So Many!
    • Working with Photographs
    • City Point
    • City Point Wharf Explosion, Aug. 9, 1864
    • Fort Rice?? We don't think so!
    • Federal Picket Line, Jerusalem Plank Road
    • Egbert Guy Fowx, Photographer at Petersburg
    • Timothy O'Sullivan, Photographer at Petersburg >
      • Fort Morton and Baxter Road Group
      • Fort Haskell Panorama
      • Fort Stedman Group
      • Gracie's Salient Group
      • Bombproofs behind Fort Haskell
      • Camp of the 50th N. Y. Engineers
    • David Knox, Photographer at Petersburg
    • William Redish Pywell, Photographer at Petersburg
    • John Reekie, Photographer at Petersburg
    • Thomas C. Roche, Photographer at Petersburg
    • Andrew J. Russell, Photographer at Petersburg >
      • "Fort Mahone" CS Batteries 25 & 27
  • U. S. Military Railroad
    • Terminus of Military R. R. at City Point
    • City Point to Clark's Station
    • Pitkin's Station to Shooting Hill
    • Hancock's Junction/Jerusalem Plank Road
    • Parke's Station
    • Warren's Station
    • Patrick's Station
  • Maps and Topogs
    • Grand Medicine Pow-wow
    • Michler's Reports from Topographical Department
    • John E. Weyss, Cartographer
    • William H. Paine, Cartographer
    • Gilbert Thompson
  • Confederate Maps
    • Confederate Defenses 1862
    • Gilmer-Campbell Maps, 1864
    • Stevens Map July 1864
    • Fields of Fire
    • Campbell Dinwiddie County 1864
    • Coit's map of the Crater Battlefield
  • Federal Maps
    • Army of the Potomac, Routes of the Corps to Petersburg
    • June 18, 1864-Federal Engineers Map
    • June 18, 1864, 18th Corps
    • June 21, 1864, Federal Engineers Map
    • June 22, 1864. Second Corps at Jerusalem Plank Road
    • June 29, 1864. Bermuda Hundred
    • June 30, 1864 -- XVIII Corps Map
    • June-July, Undated Federal Engineers Map-
    • July 1864 Map of XVIII Corps Lines
    • Crater, Native American Perspective of the Crater
    • August 28, 1864, Michler Map
    • September 13, 1864, Recon Map
    • September 30, 1864, Warren Map
    • October 1864, Two IX Corps Maps
    • Nov. 2, 1864, Army of the Potomac
    • 1864, Coast Survey Map of Petersburg
    • NEW 1865-1867, Manuscript Survey Maps
    • 1864-1867, Michler-Weyss, Siege of Petersburg
    • 1865-1867, Michler Map Series
    • 1871, Map of Recapture of Ft. Stedman
    • 1881, Boydton Plank Road
  • Confederate Forts and Batteries
    • Dimmock Line >
      • Priest Cap
      • French Rifle Pits
    • Fort Clifton
    • "Fort Mahone" CS Batteries 25 & 27
    • Confederate 8-inch Columbiad
    • Leadworks
  • Federal Forts and Batteries
    • Battery X
    • Fort Alexander Hayes
    • Fort Avery
    • Fort Conahey
    • Fort Davis & Battery XXII
    • Fort Fisher
    • Fort Meikel --Photographic Views
    • Fort Morton
    • Fort Patrick Kelly
    • Fort Sedgwick, better known as Fort Hell,
    • Fort Wadsworth -- the Evolution
    • Fort Willcox or Battery XVI
  • Battlefield Features
    • Aiken House
    • Armstrong's Mill
    • Avery House
    • Bailey/Johnston Farm
    • Blandford Church
    • Broadway Landing, Appomattox River
    • The Crater
    • Cummings House
    • Dams and Inundations
    • WW Davis Farm
    • Dunn House
    • Friend House >
      • View from Friend House toward Gibben complex and Petersburg
    • Gibbons Properties
    • Globe Tavern / Weldon Railroad
    • Gregory House
    • Griffith Farm
    • Gurley House
    • Hare House
    • Hare House Hill
    • The "Horseshoe"
    • Jerusalem Plank Road
    • Jones House
    • Jordan House
    • Newmarket Racecourse
    • Pegram's Farm
    • Peebles Farm, Pegrams Farm, Poplar Springs Church
    • Shands House
    • Taylor Farm >
      • The Ice House
      • Surviving Taylor Barn
    • Williams House
  • Signal Towers and Trees
    • Some Operations of the Signal Corps at Petersburg
  • Archeology
    • Geology of the Crater
    • Fieldwork -- Petersburg
    • Civil War Sinks
    • Deserted Confederate Camp
    • Gracie's Countermine
    • LIDAR Forts and Batteries
  • Articles, Papers, Presentations
    • Shiman: A Note on Maps
    • The Siege Landscape: Through Fire and Ice at Petersburg
    • "The Rebel in the Road"
    • "A Strange Sort of Warfare Underground"
    • Lost Trenches of Petersburg: June 17
    • Between the Lines
    • Combat Trenching: An Introduction
    • Lowe -- Post-War Topographical Survey
    • Civil War Maps and Landscapes -- Observations
  • Kittens, Puppies & Ponies
  • Executions!
  • Notes on Leveled Earthworks
  • Civil War Combat Trenching
  • Depot Hospital at City Point
  • Dimmock Battery 5 Photographs
  • Pontoon Bridges
  • The Great Pontoon Bridge Across James River
  • Appomattox Mill Photographs
  • Blank Page

Theoretically Speaking -- Notes on Studying Fortifications

​The Petersburg Project is an ongoing, long-term research effort into trench warfare in the Civil War. Although fortifications were used frequently during the first years of the war, particularly during the latter half of 1863 they began to dominate the battlefield, leading to the entrenched struggles that characterized the final, climactic campaigns in both the Eastern and Western theaters of war. By that time, digging in became the rule and survival the goal; and when on the battlefield, neither side was without some kind of artificial defenses for long. The battlefields of Petersburg contain many surviving examples of military fortifications dating from 1862 through the end of the war. It is instructive to revisit and document these resources and to compare the architecture of early war and late war fortifications. The changes were rather profound. We hope to pursue these goals here at the Petersburg Project. We hope you will follow and support our efforts.

The rise of trench warfare at Petersburg had an impact on military strategy and tactics in the nineteenth century that amounted to a military revolution. In fundamental ways, the Overland and Petersburg battles more closely resembled those of the First World War fifty years later than of Gettysburg less than a year before. This is a debated topic among Civil War historians, but there is little serious disagreement that --when viewed through the veteran's eyes-- a combatant at Austerlitz would have recognized the battlefields of Antietam or Stones River as the sort of terrible war that he fought; veterans of the Somme, on the other hand, would have looked upon the fighting at Richmond and Petersburg as more like the brutal war they experienced in Belgium and France -- minus the high explosives, machine guns, and poison gas. There were certainly incompetent generals, hyper-active engineers, deadly snipers, trench mortars, trench raids, tunneling and undermining and unexpected explosions beneath the front lines... and failed, futile attacks against fortified positions in the face of massed firepower.  All too familiar.

Historians have offered various explanations for the late-war "habit" of "digging in." In our opinion, the range, accuracy, and experience of  sharpshooters using rifled weapons drove the soldiers underground. Why would a rational human being who valued his life, not start throwing up a couple of logs and a little mound of earth in front of himself, if the enemy was aiming for his head very accurately from three hundred yards across the way? Firing a rifle and hitting a target takes some calculation and skill. I am confident that my predecessors from 150 years ago were capable of pulling off this trick. It was a challenge. Every community in the mid-1800s had competitions and awarded prizes. If you could shoot that poor squirrel through the eye, basically you were a breadwinner. "You got closest to the pin, you get the squirrel." A Civil War historian or two think that our ancestors were somehow incapable of understanding their weapon and aiming accordingly. Considering that sometimes hungry shooters needed to drop a squirrel out of the tree at 300 yards so that there was food on the dinner table, this is an unusual opinion. Some historians have described in detail the deadly toll of daily sharpshooting along the Petersburg lines and yet claim a more accurate weapon on the battlefield made no difference to the situation. Seriously? This claim is, in our opinion, a pathetic appeal for attention. It makes no sense.

Historians also argue that common soldiers themselves drove the trend towards trench warfare by routinely digging in on their own initiative; although a few suggest that it was the commanders themselves who increased their reliance on fortifications as an element of strategy, or who forced their soldiers underground by deliberately maintaining close contact with the enemy.


Actually, all of these explanations are accurate, at least to a certain extent; but none are complete. The rise of trench warfare was a complex process involving a dynamic interplay of strategic, technological, institutional, cultural, and psychological factors. We aim (ultimately) to document that process and its impact on the final campaigns. For the moment we have been focusing our efforts largely (but not exclusively) on the Siege of Petersburg, Virginia (June 1864 to April 1865), particularly on the advent of combat trenching, the habit of digging in under fire but also of carrying the tools and experience needed to entrench into combat. During the Ninth Corps assault along the Jerusalem Plank Road on April 2, 1865, for example, soldiers carried axes, shovels, and picks to overcome obstacles and even carried empty gabions across no-man's land to be filled on-site and used to reverse captured artillery. The soldiers bodily picked up the chevaux-de-frise and piled them on the other side of the Confederate works to deter (successfully) counterattacks. They began immediately to "reverse" the works, carrying revetments from one side of the fort to the other, scarping out fighting positions in the rear of the fort, piling ammo boxes for defense. .... Don't take our word for it. We have photographs.
The study of trench warfare in 1864-1865 is the final frontier of Civil War military history.  Nearly every battle and every skirmish from 1861 to 1863 has been closely examined. Desperate for new topics, historians have prepared book-length biographies of many generals and are now working on colonels. A few intrepid historians have tackled the events of the final year and a half of the war, including both campaign studies--the authoritative works of Gordon Rhea come immediately to mind--and battle monographs.  A few, most notably Earl Hess with his trilogy, have delved directly into the topic of fortifications on the battlefield. Hess's work is groundbreaking so far as it goes, but he, too, seems to retreat into moving units across the battlefield in his final volume and avoids any definitive conclusions about all of the dirt moved over his many pages.

Success has been mixed, and mostly disappointing.  Historians trained primarily in textual sources are used to mentally maneuvering troops on abstract battlefields. How do we deal with these piles of dirt we have before us? The technical barriers are significant.  Historians cannot learn about the rapid evolution of fortification technology by reading the same military manuals that the soldiers threw out the window when the real fighting began.  Indeed, the most important technology that made trench warfare possible, the "rifle pit" (in its various forms), was not even taught at West Point and did not appear in the standard textbook/manual used by both sides, Dennis Hart Mahan's ubiquitous Field Fortification.  Similarly, the traditional tools of the historian do not reveal the full use of fortifications and the sheer amount of digging that was done.  Reports and personal accounts are incomplete and often garbled; the maps of the battlefield, even those prepared by professional surveyors under peacetime conditions, make mistakes and sometimes leave much out.  The post-war surveys of the siege of Petersburg, the most comprehensive cartographic record available, contain significant inaccuracies and depict a fraction of the military construction performed there.​
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