„Sir, the King of Prussia has made you an officer of the Prussian Army, so that you know when not to obey an order!“ Prince Friedrich Karl to a Major in the Prussian Army (1870)
„ … in those cases, in which the junior-officer comes to the conclusion that his commander is no longer in a position to judge the situation, and where his order has been rendered inadequate by events, it is the expressed responsibility and duty of that junior-officer to either redefine or ignore the order.“ Prussian officer training manual of 1906