Robert Citino has written several books on the "German way in warfare" based largely on the Prussian military tradition, and I think he makes the good point that the basis of German/Prussian military technique was Bewegungskrieg ("maneuver warfare") and fast, decisive offensive action. A combat bonus that applies only to the tactical attack and a movement bonus on the tactical and game map would match those two characteristics very well, and would also be applicable to 'modern' Germany, especially in World War II when the Wehrmacht's Auftragstaktik allowed them to attack and develop/exploit an attack faster than their opponents could react to it.