I was doing a wikipedia search on Congressman Joe Sestak (D-PA) who is the highest-ranking military officer to ever serve in the US Congress--a retired Rear Admiral (equivalent of a 2 star General). Anyway, in the article on him it mentioned him competing for the Battenberg cup. Given the name and the fact that it was a naval event, I figured it had to be related to Admiral Prince Louis Battenberg. A search on wikipedia found this:
"In 1905, Prince Louis of Battenberg, commanding the five ships of the Royal Navy's 2nd Cruiser Squadron, visited the United States, making port visits in New York City, Annapolis and Washington, D.C. Shortly after his return to England, Battenberg sent the cup to Rear Admiral Robley Evans who at the time commanded the US North Atlantic Fleet. Battenberg requested the trophy become a challenge cup between enlisted men of the two navies. The challenge rules were set up for cutter racing, including a provision that British sailors could compete with their American counterparts “whenever a ship holding the cup would fall in with a British Man-O-War.” Only once in 34 years of competition (in 1907 during the Jamestown Exposition in Norfolk, Virginia) and 52 challenges did the Americans lose the cup to the British.
The rowing competition was discontinued due to World War II and never resumed. The cup was present at the attack on Pearl Harbor on 7 December 1941 aboard USS West Virginia, the last ship to win the cup. It survived the sinking of the West Virginia during the attack and remained aboard as she was raised, refitted and returned to the war. The ship retained custody of the cup until her decommissioning in 1947 when the cup was displayed at several Navy commands. It was eventually placed in the Navy Memorial Museum in Washington, D.C. until the competition reemerged in 1978 with new criteria.
The side of the three foot-high, silver-plated cup is engraved, "To the enlisted men of the North Atlantic Fleet from their British cousins of the 2nd Cruiser Squadron. In grateful remembrance of the many kindnesses, tokens of good fellowship and wonderful entertainments that were given to them in cordial friendship by their comrades across the sea." It features the crossed ensigns of the US Navy and Royal Navy."
Just an interesting (to me anyway!) tidbit that I'd thought I'd pass along.