Arent graduated from the
United States Naval Academy on May 28, 1863 and immediately went into action in the
American Civil War, participating in the
assault on Fort Fisher while serving on the
steam sloop . After the war, he rose steadily through the ranks, becoming
lieutenant on November 10, 1866, and had a large part in the United States Naval operations planning that resulted in resounding victories like the
Battle of Manila Bay. He retired from the Navy in April 1902, completing 39 years on active service. Admiral Crowninshield was a member of the
Military Order of the Loyal Legion of the United States. Rear Admiral Crowninshield died in
Philadelphia,
Pennsylvania, on May 27, 1908, and is buried in
Arlington National Cemetery. ==Personal life==