A recruit with Papa Company, 4th Recruit Training Battalion, scales the rope obstacle during the Mariana Islands event of the Crucible on Marine Corps Recruit Depot Parris Island, S.C. Oct. 22, 2021. U.S. Marine Corps Photo
Keeping them in the Marines also means keeping them healthy, both physically and psychologically, Black said.
The Human Performance branch of the service is looking at how Marines can better train in order to avoid injuries.
Black used the example of athletic training. A...