The April 1867 premiere was an immediate hit, and a parade of European royalty, drawn to Paris by the Exposition, attended performances of the operetta. Among those attending were French emperor Napoleon III; the future King Edward VII of the United Kingdom; Tsar Alexander II of Russia and his son Grand Duke Vladimir; Franz-Joseph, Emperor of Austria-Hungary; Otto von Bismarck, the Prime Minister of Prussia; and other crowned heads, generals, and ministers. Of the military satire in the piece, Bismarck remarked, ""C'est tout-à-fait ça!"" (That's exactly how it is!)