Dealing With Certain Types of Leadership

Most of the company-grade officers I have known, know better than to act like a know-it-all, unless it is widely understood that they had an NCO career before they were commissioned. SSGs and SFCs are the biggest know-it-alls, it seems, followed by MAJs, but over the years I learned that every MAJ goes through a time period when s/he's a jerk and it's usually when s/he's the S-3, so it will pass. ;)

So, to answer your question, whenever you have a bossypants giving you unsolicited advice, thank them politely for their opinion and tell them you will take it into consideration.

Tact was always an interesting thing while I was in the service.  You are right, sometimes you get these leaders, both on the NCO side and the Officer side that feel he/she is the end-all-be-all to the military.  This type of leader is toxic to all of those around and sadly, can get someone hurt or killed based on their refusal to listen to the input of others.  But let's keep in mind, 2LTs and freshly prompted SGTs are facing a huge mountain to climb.  You come into or reenter your unit with this new authority and you have to figure out the best to use it.  Sure, you can come in like an idiot, yelling and throwing things around, making people do push ups and whatever other crazy stuff you think will "earn" you the respect or you can come in, remember where you came from and listen to those around you because they were in your shoes too.  Sometimes the best leaders are those that stop talking and start listening.