(Matthew M. Burke/Stars and Stripes)

Camp Gonsalves, Okinawa, Japan, March 17, 2015: Marines from India Company’s Weapons Platoon enter a pool of murky jungle water during the Jungle Warfare Training Center’s E-Course. After the training in boot-sucking mud and thick jungle foliage, the Marines from 3rd Battalion, 2nd Marine Regiment would endure the cold, mountainous terrain of Camp Fuji in Japan, followed by the hot and humid South Korean summer for training at the Rodriguez live-fire range to finish off the six-month Unit Deployment Program.