During the Second World War, Dwight D. Eisenhower established a military headquarters at 20 Grosvenor Square, and during this time the square was nicknamed "Eisenhower Platz". Until 2009, the United States Navy continued to use this building as its headquarters for United States Naval Forces Europe. A statue of Franklin D. Roosevelt, sculpted by Sir William Reid Dick, stands in the square, as does a later statue of Eisenhower and later one of Ronald Reagan.

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