Darnestown in Montgomery County, Maryland — The American Northeast (Mid-Atlantic)
The Signal Corps and Wartime Communications
The Civil War
Photographed By Allen C. Browne, October 22, 2013
1. The Signal Corps and Wartime Communications Marker
Inscription.
The Signal Corps and Wartime Communications. The Civil War. A Signal Corps station and training camp was established near Darnestown in 1861. Signaling with flags was invented by army surgeon Albert J. Meyer and first used against the Navahos in border warfare before the Civil War. Signaling with flags provided a rapid way to convey intelligence and battlefield orders., Red Hill in Georgetown Washington D. C. served as the main headquarters and training center for the Union Signal Corps. The Corps had 300 officers and 2,500 men and one of the highest casualty rates of any unit in the Union army., Information was relayed in a chain called "Signal Tree Lane" extending form Harper's Ferry up-river and all the way down-river to Georgetown. On a clear day signals could be seen for 10 miles, but with rain and fog, visibility was obscured, which sometimes made this an unreliable means of communication., A New York infantry officer remembered being sent to Darnestown to attend a school of instruction: "The men had been selected with great care for their physical, as well as mental ability...Most of the Twenty-eighth will remember the 'Chestnut-tree station' on the Magruder farm near Darnestown, it was picturesque. The upper limbs sustained a platform for the man to wave his flag, while just underneath was the platform for the officer, who, with his glass, kept watch of the communicating station. These platforms were some forty or fifty feet above the ground and were reached by rustic ladders. This was the first line of signal stations established on the Potomac. ", (sidebar) , Flags and Lights, Other than the Signal Corps, the only means of wartime communication at that time was by scouts of horseback, word of mouth form local residents, observation balloons, and telegraph lines., From towers, building tops, tall trees, and platforms, the Signal Corps used flags and telescopes during the day and flares or torches at night to send coded messages., The wig-wag system used signal flags of white with red square centers to provide important information during the war.
A Signal Corps station and training camp was established near Darnestown in 1861. Signaling with flags was invented by army surgeon Albert J. Meyer and first used against the Navahos in border warfare before the Civil War. Signaling with flags provided a rapid way to convey intelligence and battlefield orders.
Red Hill in Georgetown Washington D. C. served as the main headquarters and training center for the Union Signal Corps. The Corps had 300 officers and 2,500 men and one of the highest casualty rates of any unit in the Union army.
Information was relayed in a chain called "Signal Tree Lane" extending form Harper's Ferry up-river and all the way down-river to Georgetown. On a clear day signals could be seen for 10 miles, but with rain and fog, visibility was obscured, which sometimes made this an unreliable means of communication.
A New York infantry officer remembered being sent to Darnestown to attend a school of instruction: "The men had been selected with great care for their physical, as well as mental ability...Most of the Twenty-eighth will remember the 'Chestnut-tree station' on the Magruder farm near Darnestown, it was picturesque. The upper limbs sustained a platform for the man to wave his flag, while just underneath was the platform for the officer, who, with his glass, kept watch of
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the communicating station. These platforms were some forty or fifty feet above the ground and were reached by rustic ladders. This was the first line of signal stations established on the Potomac. "
(sidebar) Flags & Lights
Other than the Signal Corps, the only means of wartime communication at that time was by scouts of horseback, word of mouth form local residents, observation balloons, and telegraph lines.
From towers, building tops, tall trees, and platforms, the Signal Corps used flags and telescopes during the day and flares or torches at night to send coded messages.
The wig-wag system used signal flags of white with red square centers to provide important information during the war.
Erected 2012 by Montgomery Parks.
Topics. This historical marker is listed in this topic list: War, US Civil. A significant historical year for this entry is 1861.
Location. 39° 6.218′ N, 77° 17.452′ W. Marker is in Darnestown, Maryland, in Montgomery County. Marker can be reached from Darnestown Road (Maryland Route 28) east of Seneca Road (Maryland Route 112), on the left when traveling east. Marker is in Darnestown Square Heritage Park. Touch for map. Marker is at or near this postal address: 14029 Darnestown Road, Gaithersburg MD 20878, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance
Illustrated by David Hunter Strother 'Port Crayon' Harper's New Monthly Magazine October 1886
The Darnestown signal station was on Samuel T. Magruder's farm on the Seneca Road, which General Banks used for his headquarters. An especially large Chestnut tree, 18 feet in circumference and denuded of most branches, was fitted with platforms for the signalers.
Close-up of image on marker Cornell University Library
Photographed By Allen C. Browne, October 22, 2013
5. November 1863 signal envelope
Close-up of image on marker Signal Corps Museum
Photographed By Allen C. Browne, October 22, 2013
6. Signal Corps Sketch
Close-up of image on marker Library of Congress
Credits. This page was last revised on June 16, 2016. It was originally submitted on October 31, 2013, by Allen C. Browne of Silver Spring, Maryland. This page has been viewed 650 times since then and 27 times this year. Photos:1, 2, 3, 4, 5, 6. submitted on October 31, 2013, by Allen C. Browne of Silver Spring, Maryland. • Bernard Fisher was the editor who published this page.