The German Imperial War Council of 8 December 1912 was an informal conference of some of the highest military leaders of the German Empire. Meeting at the Stadtschloss in Berlin, they discussed and debated the tense military and diplomatic situation in Europe at the time. As a result of the Russian Great Military Program announced in November, Austria-Hungary's concerns about Serbian successes in the First Balkan War, and certain British communications, the possibility of war was a prime topic of the meeting.
In the continuing debate on the causes of World War I, historians like Fritz Fischer and John C. G. Röhl consider the conference a decisive step to war, long before the July Crisis.
In the First Balkan War of 1912, the Balkan League formed by Serbia, Bulgaria, Montenegro and Greece under Russian patronage quickly defeated the forces of the Ottoman Empire. In Austria–Hungary, especially the Serbian strengthening was seen with increasing discontent and the German chancellor Theobald von Bethmann-Hollweg urged Emperor Wilhelm II to declare his solidarity according to the Triple Alliance—which Wilhelm did, however overstating the case when on 22 November 1912 he openly proclaimed 'the German support under any circumstances'.