Would an E9 comply if ordered to attention by an O1?

The thing is, everyone knows who the actual BDIC here, it's the e-9. It's upon him to be magnanimous and humble with his proverbial schlong he throws around his shoulder. If the enswine or whomever tries that shit, all it would take is a private conversation after standing at attention, and coming back to the squad. Where it will be obvious the chain of command and moral unaffected

Yes by custom. Then the O5 would tell the 2LT that his next assignment would be 3 days the other side of the end of all the supply lines.

Just about every butter bar Lt I ever knew was intimidated by Sergeants Majors, and downright terrified of Master Gunnery Sergeants. I don't think most of the SgtsMajs and Master Gunnies I served under even acknowledged the existence of 2nd Lt's anyway.

Absolutely,chain of command,
off the books touchy.

Asked that quesrion of a 01. He stated that when young people are around the E9 treated him as a superior but when just the two of them he treated the E9 as his mentor. Very classy young officer.

I would agree with most statements below, The LT would be called LT not sir, and behind closed doors there would be some verbal counselling for sure. By the CSM of course

Yes he would because he has respect.

Yes the military has RULES and regulations

I mean yea they would have to comply... My first deployment the command center had a 1LT(former SFC) and an SGM who didn't get along and the 1LT would lock him up all the time but justly so (the CSM often concurred). But in my opinion a 2LT shouldn't be locking up anyone unless they are brazenly and blatantly disrespected. A soldier missing a salute... Whatever. I try to avoid my CSM as a WO1 but we are always cordial to eachother but I don't ever try and get in his lane or interfere with NCO business. And I damn sure never expect a salute from my CSM nor would ever ask for one

Yes but as for the LT he will soon become familiar with the phrase "win the battle; lose the war"