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Germany
Practice Relating to Rule 12. Definition of Indiscriminate Attacks
Section C. Attacks whose effects cannot be limited as required by international humanitarian law
Germany’s Military Manual (1992) states: “Indiscriminate firing and bombardment means attacks … c. whose intended effects cannot be limited to the military objective.” 
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, § 455