What do you do when a soldier refuses to listen to your directions?

Set an example it should be against the uniform code.

I think one of the most effective ways to handle the situation is to punish the platoon. The platoon will take care of the problem. There are many benefits to this method. One of the most important is that It teaches the platoon to police one another.

I'm not Army, but Army Reg 670-1 outlines this disciplinary action together with Article 92. If the Doctor deemed it necessary to wear due to safety reasons, that Soldier should have said something. If not, paperwork followed by retraining is mandatory. You must change the behavior not the person. Let me guess, another millennial thinking their privileged?!

Simply remove them from his face and say "see me". Then walk off

You break him. You may be only able to do five repetitions but, you can always do multiple sets.

I read through a lot of these comments here. I just wondering the "Why?" behind the Soldier's "No." Did he just go to the eye doctor, have his eyes dialated and these were the only sunglasses he had? Does he have an eye injury and requires sunglasses? How were the sunglasses out of regulation? There is more behind the "No." There is no detail to what is happening here beyond the order and refusal. I came to formation once after getting a pre-PRK appointment and my 1SG told me to take off the sunglasses. I told him I couldn't. He asked the "Why?" and said I had just been the eye doctor and he said Okay and moved on to the formation.

You CONTACT the largest sp4 you can find ,and share your pain...a GOOD soldier should handle that crap. NO use opening up yourself to any unnecessary exposure what with UCMJ being what it is and WHINERS rampant throughout the system.Junior enlisted personnel SHOULD be able to absorb a few article 15s a bit easier than a good NCO which the army NEEDS!
A good platoon should run smoothly,with the mafia standing by.
Sorry about the wild weekends...trade off...

In that instance, I would require a formation 3 mile run, and make certain everyone knew it was being brought on due to the Super Troop who doesn't want to listen to an NCO of higher rank.

No paperwork until I have given it my best shot at winning him/her onto the right track, instead of losing him/her!

1st offense, educate the Soldier on proper military protocol...shit he/she should have learned in basic.
One could also interject some remedial training here...depends on NCO/issue at hand.
2nd offense, advise Soldier he/she is being counseled on that issue. in the counseling the blurb needs to state that further insubordination will not be tolerated and if it continues you will pursue ucmj action.
3rd offense, serious write up. Verbage in that counseling needs to state that there were previous issues, verbal reprimands, remedial training, and now you are seeking ucmj action. This way when the command reads the packet, it shows you as the leader giving the Soldier ample time to self correct before you lowered the hammer.

He's lucky he wasn't in the Marine Corps, he's be picking his butt up off the deck.