Answer:
He was the man who turned the American army into a formidable fighting force is the correct answer.
Step-by-step explanation:
Baron Van Steuben was the was a Prussian military officer who also worked with the continental army. He worked as inspector and major general during the revolutionary war and is credited as being the father of continental army. He taught the military drills, disciplined and tactics to the Americans soldiers and served as the chief of staff of George Washington. The book Regulations for the Order and Discipline of the Troops of United States was written by him and was the standard drill manual for US army till 1812.