Who is referred to as the "Grand Old Man of the Marine Corps"?

The term "Grand Old Man of the Marine Corps" is attributed to Archibald Henderson, who served as the 5th Commandant of the Marine Corps from 1820 to 1859. His leadership and contributions significantly shaped the development of the Marine Corps, establishing policies that would influence its future structure and operation. Henderson is recognized for enhancing the professionalism of the Corps, advocating for education and training, and expanding the role of Marines, particularly in areas like naval engagements and land campaigns. His long tenure and the impact of his reforms earned him the affectionate title, reflecting both respect and the legacy he left behind in the history of the Marine Corps. This title emphasizes not just his age, but the stature and reverence he holds within the institution.

Other figures listed have their own notable contributions to the Marine Corps, but none match the enduring impact and historical significance associated with Henderson's legacy in a way that resonates with the title of "Grand Old Man."