Friedrich Wilhelm von Steuben

Friedrich Wilhelm August Heinrich Ferdinand Freiherr von Steuben ( STEW-bən or stew-BEN, German: [ˈfʁiːdʁɪç ˈvɪlhɛlm fɔn ˈʃtɔʏbn̩]; born Friedrich Wilhelm Ludolf Gerhard Augustin Louis Freiherr von Steuben; September 17, 1730 – November 28, 1794), often referred to in English as Baron von Steuben, was a Prussian-born army officer who played a leading role in the American Revolutionary War by reforming the Continental Army into a disciplined and professional fighting force. His contributions marked a significant improvement in the performance of U.S. troops, and he is consequently regarded as one of the fathers of the United States Army.

Source: Wikipedia — Friedrich Wilhelm von Steuben (CC BY-SA 4.0)