RDML John Dahlgren: Nov. 13, 1809 – July 12, 1870 “Father of modern naval ordnance”
Founded US Navy Ordnance Department and launched significant advances in naval gunnery — primarily the Dahlgren rifled naval gun.
Dahlgren, from Philadelphia, was the preeminent American naval ordnance designer of his day.
Civil War commandant of Washington Navy Yard. In 1863 he commanded South Atlantic Blockade Squadron, helping William Sherman secure Savannah, Georgia.
Dahlgren’s son, Ulrich, a Union officer famous for reconnaissance in Gettysburg campaign, was killed in an unsuccessful raid to liberate Union prisoners in Richmond in 1864.
Dahlgren’s brother, Brigadier-general Charles Dahlgren, served for the Confederate States, commanding a brigade of Mississippi militia.
— CP
RDML Dahlgren aboard USS Pawnee in 1865
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