Field Marshal Hans David Ludwig Yorck, Graf von Wartenburg (1759-1830)

Field Marshal Hans David Ludwig Yorck, Graf von Wartenburg (1759-1830) was a senior Prussian commander during the campaigns of 1813 and 1814, but his most important contribution to the defeat of Napoleon came late in 1812 when he agreed to make his corps, then operating with the French in Russia, neutral, a move that helped trigger the War of Liberation in Germany,