Recently Strength was removed in favour of Fellowship for Commissars. Cool, they're charismatic types.
They can't buy Intimidate cheap at all.
Remove Fellowship, in favour of Social. Remove Agility in favour of Strength.
They will be more Intimidating that way. Command will have one aptitude, so not as good as a Sergeant, but still good. They'll be decent at Charm and things too, which are needed for some leader type talents. They will also be less stealthy.