From the announcement:
Commander system, Marlburian Commander rules catch the essence of the wars of the first half of the 18th Century. Two different infantry tactiical styles and two different cavalry approaches are handled . European armies had not yet instituted the firm command chain system with divisional structures and commanders of later decades, so much depended on the quality of the commander-in-chief. The much-praised mechanism of two-phase ordering counters and the resulting uncertainty for your opponent are present, with the accompanying fog of war.