U.S. Marines participate in a foot patrol during cold-weather training at Bjerkvik, Norway, Feb. 23. - U.S. Marines participate in a foot patrol during cold-weather training at Bjerkvik, Norway, Feb. 23.

A formation of skis belonging to U.S. Marines from 2nd Battalion, 3rd Regiment, 3rd Marine Division, as they conduct a bilateral sniper rifle range with Soldiers from 5th Brigade, Japan Ground Self-Defense Force, during exercise Northern Viper on Hokudaien Training Area, Hokkaido, Japan, Jan. 28. - A formation of skis belonging to U.S. Marines from 2nd Battalion, 3rd Regiment, 3rd Marine Division, as they conduct a bilateral sniper rifle range with Soldiers from 5th Brigade, Japan Ground Self-Defense Force, during exercise Northern Viper on Hokudaien Training Area, Hokkaido, Japan, Jan. 28.

The exercise enabled Reserve Marines to spend two weeks working together, battling the elements to ensure that they are ready to fight tonight and respond to the nation’s calls. - Marines with Weapons Company, 1st Battalion, 24th Marines, 4th Marine Division, navigate the route to their next checkpoint during the final exercise of exercise Nordic Frost on Camp Ethan Allen Training Site in Jericho, Vt., Jan. 22, 2018. The exercise allowed Marines to demonstrate their ability to operate in a cold weather mountainous environment, conducting land navigation, marksmanship training, demolitions, call for fire training and other core competencies.

U.S. Marines with Combat Logistics Battalion 15, 1st Marine Logistics Group, and 3rd Battalion, 4th Marine Regiment, 1st Marine Division, wait by a 500-gallon drum of water to conduct a Helicopter Support Team drill at Mountain Warfare Training Center, Bridgeport, California, Oct. 25, 2016. The drum was taken into the Sierra Mesa Mountains to support Marines who are conducting field operations during Mountain Exercise 6-16. - U.S. Marines with Combat Logistics Battalion 15, 1st Marine Logistics Group, and 3rd Battalion, 4th Marine Regiment, 1st Marine Division, wait by a 500-gallon drum of water to conduct a Helicopter Support Team drill at Mountain Warfare Training Center, Bridgeport, California, Oct. 25, 2016. The drum was taken into the Sierra Mesa Mountains to support Marines who are conducting field operations during Mountain Exercise 6-16.

Capt. Jonathan Blankenship, a company commander with Black Sea Rotational Force, confirms the assault on the enemy objective is complete during the final exercise of cold-weather training aboard Porsangmoen, Norway, Feb. 16-20, 2016. Arctic training was conducted by U.K. Royal Marine Commando Mountain Leaders and hosted by the Norwegian military to improve the U.S. Marine Corps’ capability to support their NATO Allies in extreme environments. - Capt. Jonathan Blankenship, a company commander with Black Sea Rotational Force, confirms the assault on the enemy objective is complete during the final exercise of cold-weather training aboard Porsangmoen, Norway, Feb. 16-20, 2016. Arctic training was conducted by U.K. Royal Marine Commando Mountain Leaders and hosted by the Norwegian military to improve the U.S. Marine Corps’ capability to support their NATO Allies in extreme environments.

Cpl. Robert Schmitt sews an Arctic camouflage net during cold weather training at Marine Corps Mountain Warfare Training Center, California, Jan. 21, 2016. The cold weather training done in the Sierra Mountains is a warm-up to Exercise Cold Response 1-16 in Norway. Nearly 80 Marines with 2nd LAAD Bn. participated in the two-weeklong exercise that taught basic mobility in snow, defensive and offensive tactics as well as basic cold weather and high altitude conditions training. - Cpl. Robert Schmitt sews an Arctic camouflage net during cold weather training at Marine Corps Mountain Warfare Training Center, California, Jan. 21, 2016. The cold weather training done in the Sierra Mountains is a warm-up to Exercise Cold Response 1-16 in Norway. Nearly 80 Marines with 2nd LAAD Bn. participated in the two-weeklong exercise that taught basic mobility in snow, defensive and offensive tactics as well as basic cold weather and high altitude conditions training.

Republic of Korea Marines demonstrate their combat tactics for U.S. Marines during Korean Marine Exchange Program 15-4 Feb. 4 at the Pyeongchang Winter Training Facility, Pyeongchang, Republic of Korea. Sharing cultures is a significant factor in gaining a better understanding of the combat tactics of the two forces despite the language barrier, according to ROK Marine Capt. Moon Jung Hwan. KMEP is a regularly scheduled, bilateral, small-unit training exercise, which enhances the combat readiness and interoperability of ROK and U.S. Marine Corps’ forces. The ROK Marines are with 1st Reconnaissance Battalion, 1st ROK Marine Division. The U.S. Marines are with Company L, 3rd Battalion, 3rd Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force under the unit deployment program. (U.S. Marine Corps photo by Pfc. Cedric R. Haller II/Released) - Republic of Korea Marines demonstrate their combat tactics for U.S. Marines during Korean Marine Exchange Program 15-4 Feb. 4 at the Pyeongchang Winter Training Facility, Pyeongchang, Republic of Korea. Sharing cultures is a significant factor in gaining a better understanding of the combat tactics of the two forces despite the language barrier, according to ROK Marine Capt. Moon Jung Hwan. KMEP is a regularly scheduled, bilateral, small-unit training exercise, which enhances the combat readiness and interoperability of ROK and U.S. Marine Corps’ forces. The ROK Marines are with 1st Reconnaissance Battalion, 1st ROK Marine Division. The U.S. Marines are with Company L, 3rd Battalion, 3rd Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force under the unit deployment program. (U.S. Marine Corps photo by Pfc. Cedric R. Haller II/Released)