It appears as though Bierman is one of those "political general" punks, complete with a big mouth...
In April 2009, Lieutenant General Bierman assumed command of 3d Marines. From 2011 to 2013, he served as the Military Secretary to the Commandant of the Marine Corps.
As a general officer, Lieutenant General Bierman commanded the Marine Corps Recruit Depot, San Diego and Western Recruiting Region from 2013 to 2016. In 2016, he was assigned to the Joint Staff and served as Deputy Director for Political-Military Affairs for the Middle East, Strategic Plans and Policy (J5).
Got most of his promotions under Omoeba-ma...