This story is available exclusively to Business Insider subscribers. Out on the snow-covered Alaskan tundra, US Army Pacific is pushing its soldiers to prepare to fight in subzero temperatures and hostile, unpredictable environments. "It's a harsh environment," Maj. Gen. Brian S. Eifler told Business Insider in an in-person interview at Fort Wainwright in Fairbanks. Some told Business Insider the Arctic was the most difficult environment to fight in, while others noted it took a specific type of mindset to survive there, let alone excel. Maj. Joseph Gaskin told Business Insider, explaining that "we don't have all the answers for this environment."

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Persons: —, USARPAC, Sammantha Ohm, Abreanna Goodrich, Snow, Maj, Brian S, Eifler, Col, Sean Lucas, Elijah Magaña JPMRC, Charles A, Flynn, USARPAC's, it's, Michael Sword, Joseph Gaskin, Lucas Organizations: Service, US Army, Business, Army, Pacific Multinational Readiness Center, BI, US, 11th Airborne Division, Troops, U.S . Army Spc, 5th Squadron, 1st Calvary Regiment, Delta Co, 1st Infantry Brigade Combat Team, Airborne Division, Pacific Multinational Readiness, Donnelly Training, U.S, Spc, 3rd Battalion, 509th Infantry Regiment, 2nd Infantry Brigade Combat Team, Pentagon, Pacific Command, U.S . Army, 11th Airborne Locations: Fairbanks , Alaska, Alaska, Wainwright, Fairbanks, Hawaii, China, Russia, North Korea