Соответствующая норма
Practice Relating to Rule 1. The Principle of Distinction between Civilians and Combatants
Section A. The principle of distinction
Germany’s Military Manual (1992) states that it is prohibited “to injure military objectives, civilians, or civilian objects without distinction”. 
Germany, Humanitarian Law in Armed Conflicts – Manual, DSK VV207320067, edited by the Federal Ministry of Defence of the Federal Republic of Germany, VR II 3, August 1992, English translation of ZDv 15/2, Humanitäres Völkerrecht in bewaffneten KonfliktenHandbuch, August 1992, § 401; see also § 429.
In 2010, in the Fuel Tankers case, the Federal Prosecutor General at Germany’s Federal Court of Justice investigated whether war crimes or other crimes under domestic law had been committed in the course of an airstrike which was ordered by a colonel (Oberst) of the German armed forces against two tankers transporting fuel for the International Security Assistance Force in Afghanistan stolen by the Taliban near Kunduz and which resulted in the deaths of a number of civilians. The Federal Prosecutor General stated:
Pursuant to § 170 para. 2 StPO [Penal Procedure Code], the investigation proceedings which were initiated by the order of 12 March 2010 against Colonel (Oberst) Klein and Company Sergeant Major (Hauptfeldwebel) Wilhelm due to suspected offences under the VStGB [International Crimes Code] and other offences are to be terminated as a result of the investigations conducted and based on the sources of information set out hereafter and on the reasons given in detail hereafter. 
Germany, Federal Court of Justice, Federal Prosecutor General, Fuel Tankers case, Decision, 16 April 2010, p. 1.
The Federal Prosecutor General further stated that “the principle of distinction … is generally recognized as customary international law”. 
Germany, Federal Court of Justice, Federal Prosecutor General, Fuel Tankers case, Decision, 16 April 2010, p. 48.
In examining murder under Germany’s Penal Code, the Federal Prosecutor General also stated:
Colonel (Oberst) Klein’s actions were lawful under international law and therefore justified under domestic criminal law [hence not constituting murder] …
In the assessment of the lawfulness of military attacks in non-international armed conflict which result in the killing of persons, the victims’ status under the international law of armed conflict is of particular relevance. One must distinguish whether the victims are armed fighters of the adverse party, civilians directly participating in hostilities, or other civilians. 
Germany, Federal Court of Justice, Federal Prosecutor General, Fuel Tankers case, Decision, 16 April 2010, p. 59.
In 2010, in reply to a Minor Interpellation in the Bundestag (Lower House of Parliament) titled “Killing of German nationals by a US drone attack – Intervention of the German judiciary”, Germany’s Federal Government wrote:
15. How does the Federal Government evaluate the legality of acts of targeted killing of persons within the context of international and non-international armed conflicts …?
International humanitarian law distinguishes in international and non-international armed conflicts between, on the one hand, armed forces opposing one another (international armed conflict) or armed forces and opposed organized armed groups (non-international [armed conflict]) and, on the other hand, civilians. 
Germany, Lower House of Federal Parliament (Bundestag), Reply by the Federal Government to the Minor Interpellation by Members Jerzy Montag, Hans-Christian Ströbele, Omit Nouripour, further Members and the Parliamentary Group BÜNDNIS 90/DIE GRÜNEN, BT-Drs. 17/3916, 23 November 2010, p. 6.