VIDEO | Historian Sam Smith discusses the importance of railroads in the Civil War era. This video is part of the American Battlefield Trust 's In4 video series, which presents short videos on basic Civil War topics.
The Civil War in Four Minutes: Naval Tech
Civil War Trust
Historian Roger Bailey discusses the revolution in naval weapons and propulsion that took place before the Civil War, and the rise of ironclads, torpedoes, and submarines in the wartime navies.
