Final answer:
Friedrich Wilhelm von Steuben wrote the 'Regulations for the Order and Discipline of the Troops of the United States' to standardize NCO duties in 1778, transforming the Continental Army into a skilled fighting force.
Step-by-step explanation:
The manual "Regulations for the Order and Discipline of the Troops of the United States," which standardized NCO duties & responsibilities in 1778, was written by Friedrich Wilhelm von Steuben. Baron von Steuben, a Prussian military officer, was tasked with training the Continental Army and implementing much-needed discipline and structure. Through his systematic training program and emphasis on drills, Baron von Steuben's contributions were pivotal in shaping up the Continental Army into a formidable force capable of taking on the British and Hessian soldiers during the American Revolutionary War.