Major Peter Barron, (left), Delegation CHIEF for the United Kingdom points out some of the communications systems to Brigadier General Gary Salisbury, USAF, (center), Director, Command Control and Communications Systems, Headquarters, U.S. European Command, and Army Lieutenant Colonel James Barrineau, USA Exercise Director, at Lager Aulenbach. COMBINED ENDEAVOR 2001, is the largest communications and information systems exercise in the world. The exercise, sponsored by U.S. European Command and hosted by Germany, is held annually to test and document the interoperability of dozens of nations. There are 37 countries participating this year