Grand Cross of the Iron Cross
The Grand Cross of the Iron Cross (German: Großkreuz des Eisernen Kreuzes) was a decoration intended for victorious generals of the Prussian Army and its allies. It was the second highest class of the Iron Cross, following the Star of the Grand Cross of the Iron Cross, which was awarded only twice.
Source: Wikipedia — Grand Cross of the Iron Cross (CC BY-SA 4.0)