On 13 November 1919, "North Dakota" left Norfolk, carrying the remains of the Italian Ambassador to the United States, Vincenzo Macchi di Cellere, who had died 20 October in Washington, D.C. The ship stopped in Athens, Constantinople, Valencia, and Gibraltar while cruising the Mediterranean Sea. She thereafter returned to the United States, and participated in fleet maneuvers in the Caribbean in the spring of 1920. In July 1921, she was present during the joint Army-Navy bombing tests, where the ex-German battleship and cruiser were sunk in an air-power demonstration. "North Dakota" returned to the normal peacetime routine of training exercises, including two midshipmen cruises in the summers of 1922 and 1923; the latter cruise went to European waters, where she visited Spain, Scotland, and Scandinavia.