Operation Remington

Can someone please explain to an idiot what this was about? I have read the Scandal wiki but it is just a very general overview and I just don't remember all the ins and outs. I don't have the energy for a full rewatch.

Why was Fitz ordered by Rowan? Wasn't Rowan already head of B613 at that time? So why was he giving orders to a navy officer? What was Jake's involvement? And there was another guy too, right? The one for whom Fitz arranged the military funeral.

And if Maya wasn't on the plane, what was the point of the operation?

This show has addled my brain!