Matches in DBpedia 2015-10 for { ?s ?p "John Adolphus Bernard Dahlgren (November 13, 1809 – July 12, 1870) was a United States Navy officer who founded his service's Ordnance Department and launched major advances in gunnery.Dahlgren devised a smoothbore howitzer, adaptable for many sizes of craft as well as shore installations."@en }
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- John_A._Dahlgren comment "John Adolphus Bernard Dahlgren (November 13, 1809 – July 12, 1870) was a United States Navy officer who founded his service's Ordnance Department and launched major advances in gunnery.Dahlgren devised a smoothbore howitzer, adaptable for many sizes of craft as well as shore installations.".