Who was the 13th Commandant of the Marine Corps?

The 13th Commandant of the Marine Corps was General John A. Lejeune, who served from 1920 to 1929. He is well-regarded for transforming the Marine Corps into a more modern fighting force, advocating for amphibious operations, and emphasizing the importance of training and education within the Corps. Lejeune's leadership coincided with a period of significant change, and he played a crucial role in shaping Marine Corps doctrine and culture. Through his efforts, he fostered a sense of identity and purpose among Marines, which is still influential today.

The other options are notable figures in Marine Corps history, but they served in different capacities and at different times. General Robert H. Barrow, for instance, was the 27th Commandant, General William H. Rupertus was the 18th Commandant, and General James F. Amos was the 35th Commandant. Each had their own unique contributions to the Marine Corps but did not hold the position of the 13th Commandant.