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Bolton Hill in Baltimore, Maryland — The American Northeast (Mid-Atlantic)
 

29th Division Association

Center Haute Meuse 1917-Sector Alsace Argonne 1919

 
 
29th Division Association Marker image. Click for full size.
Photographed by Don Morfe, February 20, 2017
1. 29th Division Association Marker
Inscription.
Charles Hazeltine Hammann Ens Air Service U.S. Navy
March 16, 1892-June 14, 1919

Henry Gilbert Costin Pvt. Co. H, 115TH Inf., 29th Div
June 15, 1898-October 8, 1918.

Ensign Hammann rescued a fellow pilot by landing his seaplane on a small body of water near Pola, Austria, August 21, 1918.

Private Costin was killed in action during the Meuse-Argonne Offensive while silencing an enemy machine gun nest October 8, 1918.

The Congressional Medal of Honor was awarded these heroes, natives of Maryland, for extraordinary performance beyond the call of duty and their heroism is hereby recognized.
 
Topics and series. This memorial is listed in these topic lists: Air & SpaceWar, World IWaterways & Vessels. In addition, it is included in the Medal of Honor Recipients series list.
 
Location. 39° 18.272′ N, 76° 37.267′ W. Memorial is in Baltimore, Maryland. It is in Bolton Hill. It is at the intersection of Howard Street and Dolphin Street on Howard Street. The monument is in a park across the street from the 5th Regiment Armory. Touch for map. Memorial is in this post office area: Baltimore MD 21201, United States of America. Touch for directions.

Regionally, this memorial is in Central Maryland. It is also in the American Mid-Atlantic and in the Chesapeake Bay Region. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once one of the original Thirteen Colonies and also the Antebellum South.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Reflections (about 300 feet away, measured in a direct line);

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Mount Vernon Cultural District (about 300 feet away); Pearlstone Park / Scott Burton (about 500 feet away); Douglas L. Frost (about 600 feet away); Neighbors and Natives (about 600 feet away); Mount Royal Station (about 600 feet away); a different marker also named Mount Royal Station (about 600 feet away); a different marker also named Mount Royal Station (about 600 feet away). Touch for a list and map of all markers in Baltimore.
 
29th Division Association Marker-back of the marker image. Click for full size.
Photographed by Don Morfe, February 20, 2017
2. 29th Division Association Marker-back of the marker
29th Division Association Marker-5th Regiment Armory in the background image. Click for full size.
Photographed by Don Morfe, February 20, 2017
3. 29th Division Association Marker-5th Regiment Armory in the background
29th Division Association Marker-In the distance image. Click for full size.
Photographed by Don Morfe, February 20, 2017
4. 29th Division Association Marker-In the distance
Charles H. Hammann grave marker image. Click for full size.
Photographed by Don Morfe, November 18, 2008
5. Charles H. Hammann grave marker
He is buried in Oak Lawn Cemetery, Baltimore MD-Hillcrest Section, Lot 1025. The grave GPS coordinates are N39.28779 W76.5244. His Medal of Honor information and citation is: HAMMANN, CHARLES HAZELTINE • Rank and organization: Ensign, U.S. Naval Reserve Fleet • Appointed from: Maryland Citation: For extraordinary heroism as a pilot of a seaplane on 21 August 1918, when with 3 other planes Ens. Hammann took part in a patrol and attacked a superior force of enemy land planes. In the course of the engagement which followed the plane of Ens. George M. Ludlow was shot down and fell in the water 5 miles off Pola. Ens. Hammann immediately dived down and landed on the water close alongside the disabled machine, where he took Ludlow on board. Although his machine was not designed for the double load to which it was subjected, and although there was danger of attack by Austrian planes, he made his way to Porto Corsini.
Henry G. Costin grave marker image. Click for full size.
Photographed by Don Morfe, February 23, 1999
6. Henry G. Costin grave marker
He is buried in Louden Park National Cemetery, Baltimore MD-Section 3, Grave 460. The grave GPS Coordinates are N39.2799 W76.6746. His Medal of Honor information and citation is: *COSTIN, HENRY G.(Killed in Action) • Rank and organization: Private, U.S. Army, Company H, 115th Infantry, 29th Division • Place and date: Near Bois-de-Consenvoye, France, 8 October 1918 • Entered service at: Baltimore, Md. • G.O. No.: 34, W.D., 1919 Citation: When the advance of his platoon had been held up by machinegun fire and a request was made for an automatic rifle team to charge the nest, Pvt. Costin was the first to volunteer. Advancing with his team, under terrific fire of enemy artillery, machineguns, and trench mortars, he continued after all his comrades had become casualties and he himself had been seriously wounded. He operated his rifle until he collapsed. His act resulted in the capture of about 100 prisoners and several machineguns. He succumbed from the effects of his wounds shortly after the accomplishment of his heroic deed.
 
 
Credits. This page was last revised on February 15, 2021. It was originally submitted on February 22, 2017, by Don Morfe of Baltimore, Maryland. This page has been viewed 587 times since then and 20 times this year. Photos:   1, 2, 3, 4, 5, 6. submitted on February 22, 2017, by Don Morfe of Baltimore, Maryland. • Bill Pfingsten was the editor who published this page.
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Jun. 28, 2026