U.S. Marines with Marine Rotational Force Europe (MRF-E) hike Torridon Skyline Mountain alongside the French Marines during exercise Green Claymore in Beinn Liath Mor, Scotland, Nov. 28, 2017.
Green Claymore is a pre-Arctic training course lead by the British Royal Marines, designed to improve mountaineering and cold-weather survival skills. (U.S. Marine Corps photo by Cpl. Careaf L. Henson) Original public domain image from Flickr