Statistics for occurrence #1 of “Fort Ellsworth” in chapter 6, page 90 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...rks, and were, themselves, badly located for isolated defense. Fort Runyon was overlooked by the heights of Arlington, as was Fort Corcoran, though the latter was better situated than the former. Fort Ellsworth was but a weak field-fortification. The main efforts of the officers were to strengthen the
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Fort Ellsworth (Kansas, United States) 78 6 2 0 0 user votes

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