CASSINO, ITALY - MAY 18:  Prince Harry attends the Polish commemoration service ceremony at Polish Cemetery on May 18, 2014 in Cassino, Italy. Prince Harry will attend a number of events commemorating the Allied Campaign during WWII, focussing on the 70th anniversary of the Battle of Monte Cassino during his two-day official visit to Italy.  (Photo by Elisabetta Villa/Getty Images)