August Neidhardt von Gneisenau
Ten years of subsequent quiet garrison life in Jauer enabled him to undertake wide-ranging studies of military and political history.Early in 1807, the Prussian Army sent Major von Gneisenau as commandant to Kolberg, which, though small and ill-protected, with the additional assistance of Schill and Nettelbeck succeeded in holding out against Napoleonic forces until the Peace of Tilsit of July 1807.But after visiting Austria, Imperial Russia, Sweden and England on secret missions, he returned to Berlin and resumed his place as a leader of the patriotic party.[5] Open military work and secret machinations tested his energy and patriotism equally, and after the outbreak of the Wars of Liberation in 1812, Major-General Gneisenau became Blücher's quartermaster-general.In 1814, as a reward for his distinguished service, Gneisenau — along with Yorck, Kleist, and Bülow — was elevated to the rank of count, while at the same time Blücher became Prince of Wahlstatt.[5] For two years Gneisenau lived in retirement at his estate, Erdmannsdorf in Silesia, but in 1818 he became governor of Berlin, as successor to Kalckreuth, and member of the Staatsrath (Council of State).