How would you react to an E2 who "smart mouths" you in formation?

Me being a E-1. I know that I would not smart mouth a higher ranking soldier simply for the fact that it is rude and doesn't follow the army values, which I feel really are a key point to being a successful army. If I was that E-5 I would put that soldier in his place and remind him of the rules of respect the Drill Sargents tought us in basic.

Letter of Reprimand for sure, he or she needs to get the message that even simple sounding work assignments are still orders. I hear tales from friends still on active duty that SO MUCH has changed regarding discipline. Troops are getting soft and disrespectful and this sort of behavior is almost encouraged! Sorry, these types of attitudes and disrespect just don't work in the military. Get out and join the Cub Scouts, NOT the Boy Scouts. You are a danger to others and you should go back to live with mommy.

This isn't a pie eating contest...this is the military. When you are given a proper order (i.e. an order that is not illegal or inappropriate) you follow it! I'd give him the same choice my dad gave me growing up. You will follow the order ricky tik or there will be consequences and I don't care which you choose!

March him to a place visible to the formation but too far for talking. Leave him there and get on about your business

Unless its an Emergency Never ask anyone to do anything you will not do yourself , Go help do the work for a little bit to show them , After one month all my Troops give me 110%, or More, I used DEMOCRATIC Leadership a Lot it makes people feel like part of the TEAM, However if Necessary I could use AUTHORITARIAN and No One wanted to see me in that State of Mind

Different ways to Handle a Situation, the Shit head Correction Officers caused most of the Problems at Twin Rivers Correction Center Monroe WA where I worked for One Year , We got the 6 Bad ones Put out on Coyote Duty around the Outside of the Prison and Things got better for Everyone
Some Situations call for the Best Man to be put in Charge, I was only Promoted 8 years ahead of the People in my Primary of 6 MOS'S Sent in to Fix many Messes, More than Once I had people that out ranked me In the Military Ordered to Work for me Some of them were seen Crying, after the Crisis was Corrected then I moved on

Hard quick direct correction. Gunny hit it on the head. If he remains defiant, thank you for your service have a nice day!

SFC Retired Walt Troy: Have PFC Dummy research Article 92, UCMJ and pick out his punishment.

Cut it out before it becomes a virus

I have dealt with this before. It typically ended with the Soldier and squad dealing with his unfinished detail as well as counseling. Due to the blatant disrespect, I would have recommended a Summarized Article 15. If 1SG wanted to give him/her a second chance, I would work it out so that the Soldier found out when we both met with the 1SG and then as 1SG and I "discussed" the situation have it known that the next instance of this behavior would result in a Company Grade. (Of course this COA would be discussed with 1SG ahead of time.)

On a side note, as a Sergeant (E5) I once had a Soldier tell me he didn't have to do what I told him because his oath of enlistment only required him to obey the officers appointed over him. I informed him that I was a Non-Commissioned OFFICER and I WAS one of those officers appointed over him. I guess he thought he only had to obey commissioned officers. lol

I'd break into pieces