Hans Joachim Friedrich von Sydow explained

Lieutenant General Hans Joachim Friedrich von Sydow (13 May 1762 in Zernikow / Nordwestuckermark – 27 April 1823) was a Prussian officer who fought in the Napoleonic Wars. He was honoured with a knighthood and the Blue Max (Pour le Mérite). He fought with distinction at Waterloo.^{[1] [2]}

Notes and References

1. Gustaf Lehmann: Die Ritter des Ordens pour le mérite. Mittler, Berlin 1913, Band 1, S. 320 und Band 2, S. 361.
2. Detlef Wenzlik: Waterloo III Der Feldzug von 1815 - Die Generäle. VRZ Verlag, Hamburg 2008,, S. 52–53.