Bob's point is too true. Been a member of four of them and each one was truly different. There are many reasons for this, but at the center is the fact that the ambassador is the president's (not DOS') rep in country and can do things pretty much however he/she wants. Instead of more specifics, I think I'll simply recommend The Special Forces Advisors' Reference Book by Research Planning, Inc. Think it was a contract for USASOC and may require AKO access. Some of the info is dated and there are a coupla inaccuracies, but overall, a good effort. Maybe Max 161 can secure a copy.