At what rank should Soldiers be exempt from organized PT?

No one should be exempt. Your life could depend on your conditionng.

I believe everyone should be required, regardless of rate or rank. As one gets older the times & amount of reps can decrease but every military member should be fit, unless there’s documented medical reasons.

Really? That's a joke, right?
Does the word soldier mean nothing? Does pride of service come from rank and status? Does readiness come from pride in what you've done or strength and skill in what you can do when the shite smacks the propeller.

I have a old friend who was an AF Reserve BG. When he deployed, rumor had it that he would get up early and do PT with the Marines!!!
3 contradictory things come to mind, he was:
Air Force
Reservist
Flag Officer
I guess he was motivated to get in shape!!

After Retirement

I had orders exempting me from all duty at E4. This was a result of staffing. I still kept myself in shape. However,I think the E5 level is the minimum rank with limited exemption.

RETIREMENT

Yet I find myself in the gym right now.

Leaders lead you don’t need to be out there everyday with your guys but they need to see you PTing with your peers everyday while they are.

Once a week PT with your guys builds this thing called “Espirit de Corps”

I know the question was for soldiers. From the Marine Corps side. Every Marine is a basic rifleman first so unless you have a medical waiver you are required to take physical fitness training. Semper Fi

As much as I disliked PT, I would say never. If you are wearing the uniform in any of our branches of service, PT should remain a requirement. That said, during my active time (1982 - 1995) the USAF did not have a program worth bragging about. Once a year we ran 1.5 miles with a time limit, and had to meet weight limits and BMI standards; that was until they decided we should sit on a stationary bike to prove our mettle. SMH! I don't know if that has changed, but given the images I see of modern airman, soldiers, and sailors on official branch web sites and the Stars and Stripes, it seems that the military's overall physical fitness and grooming standards have degenerated into a concerning mess. Lowering standards isn't helpful. IMO. God bless all of you that have taken the oath and serve our great nation.

As long as you are leading Soldiers, Marines, Airmen, or Sailors, you should be doing PT with them. Lead by example