John Dahlgren, US weapons inventor

John Dahlgren, US weapons inventor

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Credit: LIBRARY OF CONGRESS/SCIENCE PHOTO LIBRARY

Caption: John Adolphus Bernard Dahlgren (1809-1870), US weapons inventor. Dahlgren served in the US Navy during the US Civil War (1861-1865), rising to the rank of Rear Admiral. He designed several guns and cannons that helped the Union forces defeat the Confederacy. His Dahlgren gun was an improved cannon that was thicker at the breech end than the muzzle. However, further advances in artillery technology soon rendered this design obsolete. Photographed during the US Civil War (1861-1865).

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