Green Dagger U.S. Marines familiarize British Royal marines with the capabilities of the amphibious combat vehicle during Exercise Green Dagger at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Sept. 29, 2021. SHARE IMAGE: Download Image: Full Size (3.34 MB) Tags: Marine Corps, partnerships, green dagger Photo By: Marine Corps Lance Cpl. Shane Beaubien VIRIN: 210929-M-KC297-1093.JPG Photo Gallery