Question: who trained the continental army at valley forge

title: Friedrich Wilhelm von Steuben
text: The Baron , his Italian greyhound , Azor ( which he took with him everywhere ) , his young aide de camp Louis de Pontière , his military secretary , Peter Stephen Du Ponceau ( then called Pierre Etienne Du Ponceau ) , and two other companions , reached Portsmouth , New Hampshire on December 1 , 1777 , where they were almost arrested for being British because Steuben had mistakenly outfitted them in red uniforms . They were extravagantly entertained in Boston . On February 5 , 1778 Steuben and his party arrived in York , Pennsylvania , where the Continental Congress had relocated after being ousted from Philadelphia by the British advance . Arrangements were made for Steuben to be paid following the successful completion of the war according to his contributions . He arrived at Valley Forge on February 23 , 1778 , and reported for duty as a volunteer . One soldier 's first impression of the Baron was `` of the ancient fabled God of War ... he seemed to me a perfect personification of Mars . The trappings of his horse , the enormous holsters of his pistols , his large size , and his strikingly martial aspect , all seemed to favor the idea . He turned the volunteers into a great army '' 

Answer: answer: Friedrich Wilhelm von Steuben arrived at Valley Forge on February 23 , 1778 , and reported for duty as a volunteer.
 He turned the volunteers into a great army ''