USMC Officer Candidates School (OCS) Knowledge Practice Test

The correct answer is Captain Samuel Nichols, who served as the first Commandant of the Marine Corps. Nichols was appointed as the Commandant on July 11, 1798, shortly after the Marine Corps was established. His leadership marked the beginning of the Marine Corps as an organized military force under the Department of the Navy.

It's important to recognize the foundational role Nichols played in setting the standards and framework for the Corps, as well as guiding its initial development during its formative years. The significance of his legacy continues to influence the organization and operations of the Marine Corps today.

Understanding this aspect of Marine Corps history highlights the importance of strong leadership and foundational figures in military institutions, which is essential for candidates as they prepare for their roles in the USMC.