The legal grounds for this decree had been established in 1937 with the German law of Titles, Orders and Honorary Signs () that made the
Führer and
Chancellor of Germany the only person who was allowed to award orders or honorary signs. The reinstatement of the Iron Cross was therefore a Führer decree, which had political implications, since the
Treaty of Versailles had explicitly prohibited the creation of a military decoration, order, or medal. However, Germany had formally renounced the Treaty by this time. The renewal for the first time had created an honorary sign of the entire German state. The most common Knight's Crosses were produced by the manufacturer Steinhauer & Lück in
Lüdenscheid. The Steinhauer & Lück crosses are stamped with the digits "800" on the reverse side, indicating 800-grade silver. Image:DE Band mit RK (1).jpg|Knight's Cross of the Iron Cross
Knight's Cross with Oak Leaves The Knight's Cross of the Iron Cross with Oak Leaves (
Ritterkreuz des Eisernen Kreuzes mit Eichenlaub) was instituted on 3 June 1940. Before the introduction of the Oak Leaves, only 124 members of the Wehrmacht had received the Knight's Cross. Before Case Yellow (), the attack on the Netherlands, Belgium, and France, just 52 Knight's Crosses had been awarded. In May 1940, the number of presentations peaked. The timing for the introduction of the Oak Leaves is closely linked to Case Red (), the second and decisive phase of the
Battle of France. Like the Knight's Cross to which it was added, the Oak Leaves clasp could be awarded for leadership, distinguished service, or personal gallantry. The Oak Leaves, just like the 1813 Iron Cross and Grand Cross of the Iron Cross, was not a
National Socialist invention. They originally appeared in conjunction with the Golden Oak Leaves of the
Order of the Red Eagle, which was the second-highest Prussian order after the
Order of the Black Eagle. The king also awarded the Oak Leaves together with the
Pour le Mérite since 9. October 1813 for gallantry. Image:BmRKEL.jpg|With Oak Leaves Image:Eichenlaub zum Ritterkreuz des Eisernen Kreuzes Detailaufnahme.jpg|Detail
Knight's Cross with Oak Leaves and Swords The Knight's Cross of the Iron Cross with Oak Leaves and Swords (
Ritterkreuz des Eisernen Kreuzes mit Eichenlaub und Schwertern) was instituted on 15 July 1941. The first recipients were
Werner Mölders and
Adolf Galland. Presentation of the Diamonds came as a set and included the more elaborate A-piece and a second clasp with
rhinestones for everyday wear, the B-piece. The Diamonds were awarded 27 times during World War II. However, three awardees never received a set of Diamonds.
Hans-Joachim Marseille, the fourth recipient, was killed in an aircraft crash before its presentation. The deteriorating situation and the end of the war prevented its presentation to
Karl Mauss, the 26th recipient, and
Dietrich von Saucken, the 27th and final recipient. Image:BmRKELSB.jpg|With Oak Leaves, Swords and Diamonds Image:Helmut Lent Diamonds.jpg|
Helmut Lent's Diamonds,
Bundeswehr Military History Museum Knight's Cross with Golden Oak Leaves, Swords, and Diamonds The Knight's Cross with Golden Oak Leaves, Swords, and Diamonds (
Ritterkreuz des Eisernen Kreuzes mit goldenem Eichenlaub, Schwertern und Brillanten) was instituted on 29 December 1944. This medal was the highest level, originally intended for 12 of the most distinguished servicemen in the entire German armed forces after the war ended. Six sets of Golden Oak Leaves were manufactured, each consisting of an A-piece, made of 18-
carat gold with 58 real diamonds, and a B-piece, made of 14-carat gold with 68 real sapphires. One of these sets was presented to
Hans-Ulrich Rudel on 1 January 1945; the remaining five sets were taken to
Schloss Klessheim, where the US forces took them. File:BmRKELSBGold.jpg|With Golden Oak Leaves, Swords, and Diamonds File:K1024 DSC00994.JPG|Rear side of the Oak Leaves of the Knight's Cross of the Iron Cross ==Nomination and approval procedure==