This has bothered me when researching fic in that era. It seems like she's a part of the civilian command, but what does she do? It's maddeningly vague in the movies. I suppose it depends how militarised the Alliance is, but I always thought that there would have to be some set hierarchy in place, some kind of structured system. Otherwise who would know where to take orders from? The Alliance may be wanting to avoid resembling the Empire, but on the other hand the Imperial defectors in Alliance ranks are used to a structured command system and may not adjust well to finding themselves without one. Especially in a battle scenario.

Come to think of it, I don't think Mon Mothma had a title in the Alliance. Would she retain Senator as a title (even through the Senate's disbanded)? Was Garm Bel Iblis referred to as Senator in the EU?

It's all very unclear. Perhaps the Alliance just weren't very organised. :p

Edited for typos. I should know better than to try to type coherently after midnight.