Interesting. I haven't heard of Mid-Childa, but depending on the time period this is hardly surprising.
[He hesitates when he's asked about being a peacekeeper, then explains.]
Commissars are political officers who maintain discipline among the soldiers of the Imperial guard. My position as a Colonel-Commissar also confers command of an Infantry regiment on me. Unfortunately, our society is at war with the Ruinous powers, and several races of aliens, so we are not peacekeepers but warriors.
[He smiles, as though to soften the statement.] It is a nice thought, though.