It was the highest (normally awarded) class of the Iron Cross. Along with the Iron Cross 1st and 2nd Class, the Grand Cross was founded on 10 March 1813, during the Napoleonic Wars. It was renewed in 1870 for the Franco-Prussian War and again in 1914 for World War I. In 1939, when Adolf Hitler renewed the Iron Cross as a German (rather than strictly Prussian) decoration, he also renewed the Grand Cross.