James M. Ambler was a Confederate cavalryman during the American Civil War (1861–1865) and,
after the war, a United States Navy surgeon. Ambler graduated from medical school in
Baltimore, Maryland, in 1870 and joined the Navy, serving on various ships and at the
Norfolk Naval Hospital. In 1878, he reluctantly volunteered for service with an
Arctic expedition aboard the Jeannette, a ship commanded by
George W. De Long. The ship became imprisoned by ice lat. . .
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