He worried the troops would reject him because he had not served in any of its elite units such as the Army's Delta Force or the Navy's SEAL Team 6.

NPR: McChrystal Takes Blame For Rolling Stone Article

Perhaps if you had absolutely no knowledge of the U.S. military, or indeed access to Wikipedia where SEAL Team Six has had an entry since 2004, it would be news to you that SEAL Team Six, along with the Army's Delta Force, are America's premier counterterrorism units.

CNN: Are 'Swift Boat' attacks on Obama bogus?