[@VitaVitaAR]So I have an idea for a Sergeant at arms sort of character who is a bit of a vet and can act as a intelligent extension of the captains will since she is kinda young from her bio. I.E. The order: take that hill. Becomes a series of a effective orders to the Knights with him. Resulting in the intended effect. 

My other thought was some sort of foreign Knight to give him a little variance in equipment, combat style and cultural background. 

I also have some other thoughts in terms of variations on just more generic Knights if neither of those sound appealing