Thanks for posting both parts. Especially in light of the fact that you've been in contact with the author, I wonder if you can answer some of the questions I had in reading the rules:
(1) Is movement only directly forward, or is some degree of oblique allowed, and if so what is the cost?
(2) Can units which have been charged by enemy units move, if their wing hasn't yet moved in the turn? If so, what's to keep them from breaking contact, or turning to face a flank charge?
(3) When can a formation change facing – only at start of move, or during move, or at any point? What about detachments which pay no cost? If they can change facing for free at any point, then as long as they don't move across the face of an enemy they can basically teleport to the rear of an enemy unit and blast away with impunity.
(3) How far do dragoons move? What is the cost for dismounting? Why would you ever dismount dragoons anyway, since they can shoot just as well mounted?
(3 bis) Given the ground scale, why do mounted cavalry shoot? Shouldn't their pistolry be represented by close combat?
(4) Units which suffer Disorder have the possibility of recovering during the Reform phase. However, there is no procedure listed for Wings which have become Fatigued to recover. Is this the case – once a wing is Fatigued it can get worse (Exhausted/Collapsed) but never better?
(5) On page 55, the note in the text ("…e.g a loss of 2 would rout a disordered unit but would only disrupt a sound unit.") contradicts the table below which states "Sound or Disorderd units become Routed".