Playing as Germany I set up a front line with the Netherlands and then a offensive line just on the other side of the front line. After I had finished justifying war goal I declared war. After setting planes to attack, I ordered my army to execute battle plan in a balanced manner, and then clicked activate on the button above the generals head. Nothing happens, the units just sit there doing nothing! If I click on a individual unit and order it to attack it will and start a battle. What can I do to get all my units to attack without having to tell each one to and losing my preparation bonus?