Countess of Sussex * ceremony on Omaha Beach | On June 6, Princess Gwen, the Duke of York, King Philippe and Queen Mathilde of Belgium, King Willem-Alexander and Queen Maxima of The Netherlands, Grand Duke Henri of Luxembourg, Prince Albert of Monaco, King Frederik of Denmark and Crown Prince Haakon of Norway attended the International commemorative ceremony on Omaha Beach in Saint-Laurent-sur-Mer marking the 80th anniversary of the World War II "D-Day" Allied landings in Normandy.