At what rank should Soldiers be exempt from organized PT?

This is a rhetorical question right?...I sure hope it is. Nothing like excusing mid grade and senior level personnel from a team building event to destroy Esprit de Corps in a Unit. Somebody please "gorilla drill" the guy that posted the question in the first place. Now my CSM hackles will be up all day...

Never. That's why it is on a graduated points system. If you can not maintain the standard, then you really should consider getting out. As I remember, if you can not make standards within a year, they put you out for the better of the military.

Although my site claims the Corps, I have served with both the Army National Guard and Reserves. During that tenure, I was a 95BX30, Military Police Drill Sergeant. I served from Vietnam to Iraq.That being said, I would like to express my point of view.
The level of physical exertion in a combat zone should be equal to the exertion during Group PT. That is who we are, warriors, period. If you are anything else, get the F out and we will support you, because that is what we do. If you “can’t hang” hang up your jockstrap or training bra, if you can’t figure out who you are hang up everything and go AWOL and you are on your own.
Morale and esprit de corps comes to the front during group PT. It also identifies those willing to go the extra mile and those that are unwilling to do the same. Vital information for leaders during the pre-deployment stage and especially in the heat of battle and you are totally exhausted. Or you can suck it up and lead by example, during PT and in the combat zone and become legendary.

Retired for almost three years.

Your followers cannot see your good intentions, but they will surely respond to your good example. Hence if you want to be a good leader at any rank and not just a commander with subordinates. Then always choose to lead by example your entire career. There is a little time to relax as you slip into the retirement world. But, I really think you will find those good leaders are always called upon (even in retirement) to take up the challenge of leadership when others around you are failing so miserably to do just that.

NONE-No Rank should be exempt

Never! It is the duty of every man or woman serving in the military to stay in shape. Very few will do it on their own. Unless you have a proven record of passing every physical fitness tests (and not just barely) you should have to do PT as a group. Back when I was in you didn't want to be the one that couldn't do the minimum number of pull ups, sit ups or drop out of the three mile run.

I always did PT with my unit and on runs at the end of my career (34years), I told everyone on the PT test, anyone that finishes after me fails

Yes SSG Fleming when you are retired. Never ask your people to do what you can't do. It's one of the basics of leadership.

General you lead from the front not from a desk! generals are past the point they will be running into or away from a fire fight below that they need to be out there leading! don't ask a young troop to do something you cant or wont do!