Prussian officer in the United States Army.

Served in the United States. Congress named him Colonel of the German Regiment (the 8th Maryland regiment) in 1777.

Due to health problems, he was granted a leave of twelve months, during which time he returned to Europe (1778-79).

Wrote to Franklin to express his interest in becoming an intermediary in the commerce of linen from Germany to the United States (1779).

Resigned his command of the German regiment (1781). Worked in America with Steuben and Holtzendorff in the service of the Inspectors General (1781).