Yes, he is a serving officer in the U.S. Army. You can see his picture and some information on him here:
http://sipseystreetirregulars.blogspot.com/2013/12/current-serving-army-ltc-and-small-wars.html
As I’ve mentioned on other threads, I believe that his article in Esquire is a part of his pre retirement planning. He is hoping to become a darling of the Left and score a position either in Left Wing Academia or in a Left Wing think tank.
That makes sense—going the route of Wesley Clark. I hope he’s not too lonely out there on the fringe left. What a clown.
http://sipseystreetirregulars.blogspot.com/2013/12/current-serving-army-ltc-and-small-wars.html
great link, thanks.