https://en.wikipedia.org/wiki/Teutonic_Order
https://en.wikipedia.org/wiki/Iron_Cross
https://en.wikipedia.org/wiki/Bailiwick_of_Utrecht
https://en.wikipedia.org/wiki/Order_of_the_Red_Eagle
https://en.wikipedia.org/wiki/Order_of_the_Black_Eagle
https://en.wikipedia.org/wiki/Order_of_the_White_Eagle_(Poland)
https://en.wikipedia.org/wiki/House_of_Hohenzollern
The Nazi's were a front for the 'Black Cross'. The Black Cross was created during the siege of Acre, Kingdom of Jerusalem during the Third Crusade. The wreaths and eagles tie the Iron Eagle ultimately to the House of Hohenzollern(Prussians). Their Coat of arms details some kind of power structure.