Sunrise as troops assigned to NATO’s Allied Rapid Reaction Corps (ARRC) train for their corps warfighting role during Exercise ARRCADE FUSION 19, held at the Royal Air Force station in St Mawgan, United Kingdom, Nov. 19, 2019. The two-week exercise demonstrated the multinational headquarters’ ability to command and control troops as the ARRC prepares to become NATO’s first warfighting corps to be held at readiness since the Cold War.