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Germany
Practice Relating to Rule 146. Reprisals against Protected Persons
Section D. Civilians in the power of the adversary
Germany’s Military Manual (1992), in the chapter dealing with reprisals, refers to Article 33 of the 1949 Geneva Convention IV and Article 51 of the 1977 Additional Protocol I and provides: “It is expressly prohibited by agreement to make reprisals against: … civilians”. 
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, § 479.
Referring to Article 33 of the 1949 Geneva Convention IV and Articles 20 and 51 of the 1977 Additional Protocol I, the manual further states: “Reprisals against the civilian population … are prohibited.” 
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, § 507.
In a chapter entitled “Belligerent occupation”, the manual, referring to Article 33 of the 1949 Geneva Convention IV and Articles 20 and 51 of the 1977 Additional Protocol I, further states: “Reprisals against civilians … are prohibited.” 
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, § 535.