Armand had previously served in the French Army, serving with the Garde de Corps or household guard to the King of France; however, he was forced to leave after injuring the King's cousin in a duel, heading on to America.

[1] The legion was recruited primarily from foreign volunteers to the American Revolution.

After hard fighting with Washington in the north Armand's Legion had taken heavy losses, however, permission was given for its numbers to be renewed from Hessen POWs.

Henry Bedkin's Troop of Light Horse, and was reorganized and renamed the 1st Partisan Corps.

Armand had left the legion just after the Battle of Camden for France to gain fresh funds and supplies, returning to meet his legion at Yorktown's front lines, participating with them on the successful assault of Redoubt 10.