21st Special Troops Battalion deploys to Bergen-Hohne Training Area to provide life support to incoming rotational units as part of DEFENDER-Europe 20, Jan. 22, in Kaiserslautern, Germany. 21st STB will be facilitating DEFENDER-Europe 20 from Bergen-Hohne Training Area for the next coming months. DEFENDER-Europe 20 is the largest deployment of U.S.-based forces to Europe for an exercise in the more than 25 years. (U.S. Army video by Spc.