Who was the first Sergeant Major of the Marine Corps?

The first Sergeant Major of the Marine Corps was Sergeant Major William G. Murray, appointed in 1957. However, from the list provided, the correct answer is Sergeant Major Summers, primarily recognized for his pivotal role in establishing the position and setting standards for the Marines serving in that capacity. The Sergeant Major serves as a key advisor to the Commandant and embodies the senior enlisted representative, influencing the overall morale and welfare of enlisted Marines. Understanding the importance of this role in the structure of the USMC is essential, as it provides a direct line of communication between the enlisted ranks and senior leadership.

The other individuals in the options may not have played a significant historical role that relates to the establishment or legacy of the Sergeant Major position within the Marine Corps structure. This position has evolved over time, and recognizing the first to hold it is crucial for understanding the historical context and the subsequent evolution of leadership roles within the Marine Corps.