At what rank should Soldiers be exempt from organized PT?

E-6. And any officer

I think it should be based on results. If a Soldier consistently scores in, say, the top 10% of the unit and has demonstrated enough self discipline, let them do PT on their own.

Before 1982 there was a cut off at age 40. I was 39 in 1981 and ran the best time of my life - then had to start a reduced old fart version the next year something like 10 sit ups and pushups and a walk. There were alot of guys older than me who were pretty red faced on PT day and they came up with new requirements the next year.
Rank had nothing to do with it.

When you out rank the commander of the PT Program.

The only time you as a service member should be exempt from PT, is when you are on a profile/ limited duty status from medical or retired . Even then depending on medical profile, you probably can still workout something other then being lazy.

5 Star

This is not difficult. It has nothing to do with rank. It is when they are in a position that they can be trusted to stay in shape, and does not require them to set the example. That is a very rare occurence.

All military personnel should fitness training - and be tested as long as they're on active (or active reserve) duty.
If they - both officer and enlisted, are too old (don't know who would make that call) to do the training or pass the physical part of the test; they should be shown the door.

E-10

When they get promoted to civilian