Have you ever had a Company/ Battalion/Brigade Commander that would sacrifice his/her career for doing what's right?

My last two COL Commanders were that way and expected it from all around them. Both are wearing three stars now, so it works for many.

had a few Company Commanders that had no problem telling it like it was. And, ironically, both were Combat Engineer officers. And both served as CC for the same company

The one that sticks out most was the Battalion Commander. It was mid - late 90's and the AAV was long in the tooth but modernization didn't seem to be on the horizon. He made leaking torsion tubes a dead-lining criteria which essentially dead-lined the entire battalion. From what I understand he had to go dance on the Division's red carpet to explain why the battalion was non-mission capable and subsequently the Division was degraded (no ability for lift from sea to shore means no infantry going ashore). Although it was a miserable week or so of nearly round the clock maintenance rebuilding torsion tubes I think it is what helped get the funds moving toward what eventually became the RAM/RS upgrades.