thebuilder
I like the sound of him, can you give a little more info, but I think he would be a fitting Commander, unfortunately he doesn't sound like a Supreme Commander due to the slight cruelty bit, as Supreme Commanders need to be exemplars for the rest (which is why one of them is about to be court martialled, hence the free slot).
But anyway:
Commander Yellovis walked into Secretary Colon's office, Colon was sitting scribbling something on a document, which appeared to be on parchment paper, Yellovis Coughed, the secretary continued to scribble for a bit, then looked up
"Ah, Commander, I am pleased to tell you that your application has been approved, you will be able to take on your first Command immediately, You are greatly honoured Commander, it appears that due to your great tactical expertise at training school you have been granted control of a Regis, a great responsibility, your ship is currently in orbit, as it is one of the recently produced units, and so is taking on crew for the first time, I believe your ship is called the "Stalwart", an excellent name, and one which has been owned by many great vessels, let us hope you are worthy of this ship eh?"
He hands Yellovis the parchment
"Your certificate of command, present it to the first officer on your arrival."