The military adviser is definitely the most useless of the bunch. At least the other ones tell you something that you may perceive as useful, however the military guy just flat out lies. "Our war with the Romans is not going well, we should sue for peace immediately" Looks at map. I have just TAKEN 8 OF THE CITIES. 8! How is this not going well for me? Then I have Caesar who insists on me giving him everything I own to end the war, when I am clearly winning. I have double the size of my empire and significantly shrunk his. I figured it out. My military adviser must actually work for the Romans!