Eric Schlegel, an avid civil war historian, from Indian Head, Md., talks to members of the 114th Signal Battalion during a Staff Ride on the Antietam battle field, Sharpsburg, Md., Oct. 26, 2015. The Army has long used the staff ride as a tool for professional development, conveying the lessons of the past to contemporary Soldiers ( Army photo by Sgt. 1st Class Christophe D. Paul/Released)

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Keywords: ., 114th, 1st, 55th, antietam, battalion, christophe, civil, class, comcam, company, paul, ride, sgt., signal, staff, war