Crucible Combat Marine Corps recruits fight with pugil sticks during the final challenge of recruit training, known as the Crucible, at Marine Corps Recruit Depot Parris Island, S.C., July 20, 2018. Marine Corps photo by Cpl. Joseph Jacob SHARE IMAGE: Download Image: Full Size (7.15 MB) Tags: Marine Corps Photo By: Cpl. Joseph Jacob VIRIN: 180720-M-XY771-017C.JPG Photo Gallery