"The most portentous national disaster was not the sad downfall of the Hohenstauffens owing to the intrigues of Papal and French policy, but the defeat of Tannenberg, which resulted in the loss of a large portion of the colonisation work of centuries, and the cession to the Poles of West Prussia and Danzig, and which put an end to the proud independence of the State of the German Order of Knighthood. (...) It may be questioned whether, had it not been for the black day of Tannenberg, the State of the Order of Knighthood would have been able to keep the East permanently German, in defiance of the superior power of Poland."