From the Classified Decree of the Commanding General of the VII. Battalion Baron Moritz Ferdinand von Bissing on the Conduct of Troops in Instances of "Domestic Unrest”
On the basis of historical studies, the High General Staff has summarized those lessons and experiences that can be of significance for the conduct of the military during insurgencies and street fighting.
I bring them herewith to the attention of the commanders, including the field officers.
In the face of demonstrations, the police are generally sufficient enough to maintain order. The military may not be used for the sole purpose of strengthening the police. Regarding the relationship of the military to the police, in case the military should be called upon to support a civilian authority, the provision governing the use of weapons (11.2) leaves nothing open to question.
If the use of a weapon becomes necessary in a given situation, then the warning that, according to law, must be repeated three times must also be pronounced so clearly that even persons standing at some distance will be able to understand it. The warning must also be given in a manner that leaves no doubt as to the fact that the inevitable consequence – even of merely persisting in a state of passive resistance – is the use of a weapon.
If the necessity to use firearms presents itself, then it is wrong for the military at first to aim their weapons over the heads of their targets, even if the crowd in question appears to be unarmed. It is much better for the military to demonstrate right away its firm resolve to the insurgent elements, and thus to nip their revolutionary longings in the bud.
In the case of a real insurgency it will have to be anticipated that the insurgents will be well organized; already, the social-democratic associations and unions that exist everywhere are, to a certain degree, the first step towards such a well-organized insurgency. [ . . . ]
As soon as the police can no longer control the movement of the masses and these crowds assume a threatening attitude towards the organs of security and order, the moment has arrived to declare a state of siege over the rebelling district (Law Concerning the State of Siege from June 4, 1851).