German Deligation chief Maj. Martin Wagner, reports in during the opening ceremony of Combined Endeavor 2013.Germany was among 40 nations represented for the annual exercise that takes place Sept. 13-26, 2013. Combined Endeavor, a U.S. European Command-sponsored event, explores and resolves multinational tactics, techniques and procedures and builds command, control, communications and computers (C4) planning experience and knowledge among participating nations.