How a Gettysburg Licensed Battlefield Guide Found a Soldier Portrait Through Military Images to Help Tell the Story of the Fight

When Gettysburg Licensed Battlefield Guide Jerry Hahn watched a YouTube episode of Life on the Civil War Research Trail featuring Capt. Davis Eugene Castle of the U.S. Signal Corps, a wartime portrait of Castle—standing confidently, binoculars in hand—appeared on the screen.

Hahn, who tells Castle’s story as part of his tour, had not previously seen the image.

Carte de visite by an anonymous photographer. The late Rick Carlile Collection.

Hahn reached out and requested permission to use it, and for a higher resolution copy.

The image, part of the late Rick Carlile Collection, first appeared in our Summer 2019 issue in a feature story titled “Optics: Military men with field glasses and telescopes.

In 2022, Castle’s image and story appeared in the book Gettysburg Faces: Portraits and Personal Accounts, printed by Gettysburg Publishing.

Castle’s Gettysburg story is memorable. According to an official report by his commanding officer, “On July 3, when the enemy made their furious attack upon our center at Gettysburg, Captain Castle occupied a signal station at General Meade’s headquarters, near Cemetery Hill, and remained there on duty after all others had been driven away. His flagmen had also left with his signal equipments, under the impression that their officer had gone with the rest. Having occasion to send a couple of important messages to the general commanding, then at General Slocum’s headquarters, Captain Castle quickly cut a pole, extemporized a signal flag from a bedsheet procured nearby, and sent his dispatches through under a most galling fire.”

Courtesy Jerry Hahn.

We gladly granted Hahn’s permission to use the portrait in his interpretive work on the battlefield. Using ChatGPT’s image-generation tools, he created a compelling artistic interpretation of Castle, standing with his improvised bedsheet signal flag, with Meade’s headquarters behind him. This imaginative visualization reflects what great battlefield guides do—take historical evidence, understand it in context, and bring it to life in ways that help visitors see the past more vividly. Hahn’s image reinforces Castle’s extraordinary moment of bravery and ingenuity.

Licensed battlefield guides like Hahn help visitors understand the human stories that shaped the battle. Their work depends on primary sources—photographs, letters, memoirs—and on the historians, editors, and collectors who preserve and publish them.

When battlefield guides and other students of Civil War history reach out to request an image—as Hahn did—we see it as a sign that the magazine remains a relevant resource for public history. We’re honored to support Hahn and all who interpret America’s defining conflict.

The Autumn 2025 Issue

A complete table of contents for the Autumn 2025 issue of Military Images magazine, and information about how to purchase single issues and subscriptions.

Vol. XLIII, No. 4
(80 pages)

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Inside

Cover
An albumen print the Rick Carlile Collection pictures five members of Company F, 44th Massachusetts Infantry, posed with weapons and gear.

Table of Contents (p. 1)

Editor’s Desk (p. 2)
A reflection on generative AI that animates and colorizes 19th-century military photographs, situating it within photography’s history and public engagement.

Mail Call (pp. 3-4)
Feedback includes the identification of two military images: U.S. Navy sailor Isaac H. Pierman and Sgt. John S. Koster of he 35th and 21st Massachusetts infantries.

Military Anthropologist (p. 4)
Newspapers.com data shows how “Contraband,” “Fugitive Slave,” “Colored Troops,” and “Freedmen” rose and fell in U.S. newspapers during the Civil War, 1861–1865.

Passing in Review (p. 6)
Review of Timothy Renner’s I Have Never Minded the Loneliness, profiling 37 hermits—including Gettysburg’s Hermit of Wolf Hill—with ties to Strange Familiars.

Photo Sleuth by Kurt Luther (pp. 8-11)
How to use generative AI in Civil War photo sleuthing: reverse image search, facial recognition, backdrop matching, better prompts, bias checks, and cautions.

Antebellum Warriors by Ron Field (p. 12)
A South Carolina militiaman with palmetto-plumed shako, triple-breasted coat, leather stock, civilian trousers, and an 1807-pattern stirrup-hilted sword.

Most Hallowed Ground (p. 14)
Franklin Y. Commagere served with the 14th Ohio Infantry, 67th New York Infantry, and the 6th U.S. Colored Cavalry; later in the 7th U.S. Cavalry. He is buried at Arlington.

The Honored Few by Evan Phifer (p. 16)
At Gettysburg, John B. Fassett led the 39th New York Infantry to retake Watson’s Battery guns near the Trostle farm on July 2, 1863, earning the Medal of Honor.

The Citizenry by Elizabeth A. Topping (p. 18)
Nine women identified as nurses at York U.S. Army Hospital, c.1864; with ties to the Ladies’ Aid Society ties and care after the Battle of Gettysburg.

Of Arms and Men by Phil Spaugy (pp. 20-23)
Company B, 9th Pennsylvania Cavalry on Lookout Mountain with Starr carbines in 1864, soon to ride under Kilpatrick during Sherman’s March to the Sea.

“Our Mess”: An 1862 image captures the camaraderie, campaigns, and distinctive equipment of five pards in Company F of the 44th Massachusetts Infantry by Michael R. Cunningham, Ph.D., featuring an image from the Rick Carlile Collection(pp. 24-27)
Exploring an image of five soldiers of Company F, 44th Massachusetts Infantry, posed with Enfield rifles and Short’s Patent knapsacks.

Marching Order! A glimpse of what federal soldiers looked like as they marched into battle— and into history by Michael R. Cunningham, Ph.D., featuring images from the Rick Carlile Collection (pp. 28-37)
Portraits show soldiers ready for campaigning with field gear—knapsacks, canteens, bayonets—plus other gear, from all sections of the Union.

The Bayard of the Volunteer Army: The life and death of Brig. Gen. William Haines Lytle, the poet-warrior by Ronald S. Coddington (pp. 38-43)
William Haines Lytle, 10th Ohio commander and poet, received a gold Maltese cross in August 1863 and fell at Chickamauga weeks later; his verse shaped his legacy. 

On Quinby’s Watch by Ronald S. Coddington (pp. 46-55)
Colorado Lt. Ira Quinby, a Signal Corps officer active at the 1864 Battle of Westport, helped guide moves that halted Price’s Raid—The Gettysburg of the West.

Mary’s Album: Cartes de visite and tintypes collected by a teenager put faces on two Loudoun Rangers of Virginia by Bob Iwig (pp. 58-60)
A Harpers Ferry teenager’s album includes photos of two Loudoun Rangers—Union cavalrymen active in an area with Mosby’s raiders and White’s Comanches.

Collecting Civil War Artifacts Before the Centennial by Norman Delaney(pp. 62-63)
Reflecting on how Civil War artifacts were found before the 1961–65 centennial, from family heirlooms to Bannerman catalogs, antique shops and early hunts.

Material Culture by Frederick C. Gaede and Paul D. Johnson (pp. 66-67)
Colonel William d’Alton Mann proposed shoulder-slung accouterments to move weight off the waist. Selected units tried the innovation, but never adopted it as standard.

Women of War by Melissa A. Wynn (pp. 68-69)
Louisa May Alcott served as a Civil War nurse in Washington, D.C., recorded her experiences in Hospital Sketches, and championed women’s rights.

Behind the Backdrop by Buck Zaidel (pp. 70-71)
A Hartford, Conn., studio’s camp-scene backdrop—attributed to Nelson A. Moore—shows up in similar form in Ohio and Philadelphia, tracing links among wartime studios.

Vignette by Scott Valentine (p. 72)
Samuel A. Duncan led the 4th and 6th USCT at New Market Heights in 1864 during the Richmond campaign; Sgt. Maj. Christian Fleetwood earned the Medal of Honor.

Stragglers (pp. 74-76)
Kentucky campaigners, a sailor of Asian heritage, a split-screen soldier on camp and on campaign, and a soldier at Point Lookout.

The Last Shot (p. 80)
Unidentified Confederate with Bowie knife, single-shot pistol, and tinware in a wool jacket—a ninth-plate ambrotype from the Paul Reeder Collection.