Sarajevo and the July Crisis
Sarajevo, 28 June 1914
Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, arrived in Sarajevo on the morning of 28 June 1914 to inspect Bosnian military manoeuvres. The date was provocative: it was the anniversary of the medieval Battle of Kosovo, a sacred day in Serbian nationalism. Six young assassins from the secret Serbian society the Black Hand had crossed the border to kill him. The first attempt — a bomb — failed. The Archduke decided to visit hospital to see the wounded. His driver took a wrong turn and stopped to reverse directly in front of one of the conspirators, Gavrilo Princip, who fired two shots. Franz Ferdinand and his wife Sophie were both dead within minutes.
On 28 June 1914 Bosnian Serb Gavrilo Princip, acting for the Black Hand secret society, shot Archduke Franz Ferdinand and his wife Sophie in Sarajevo. The assassination triggered the July Crisis — but it was the trigger, not the cause, of the war.
Slav Nationalism and the Long Background
Slav nationalism had been a structural problem for Austria-Hungary for decades. The empire ruled millions of Czechs, Poles, Croats, Slovenes, Slovaks and Bosnian Serbs alongside its German and Hungarian core. Many of these peoples wanted national independence or union with neighbouring Slav states. Serbia, freshly enlarged by the 1912-13 Balkan Wars, made itself the patron of Slav independence. The Bosnian Annexation of 1908 had infuriated Serbian opinion; the Black Hand, founded in 1911, organised cross-border activity to undermine Habsburg rule. For Vienna, Serbia was an existential threat, not just a small neighbour.
A common student error is to write that the assassination ‘caused’ the First World War. It did not. The deeper causes — the alliance system, Anglo-German naval rivalry, Slav nationalism in Austria-Hungary, the militarisation of European planning — had been building for two decades. The shots in Sarajevo were the spark that ignited an already prepared bonfire. Other shots in 1914 might equally have produced a war — or might not have, if the alliance system had been less rigid. Christopher Clark’s The Sleepwalkers argues European leaders did not consciously choose war but allowed themselves to be carried by their own commitments and miscalculations to the brink and then over it.
The Blank Cheque, 5 July 1914
The Austro-Hungarian government in Vienna decided within days that Serbia must be punished. But it needed German support. On 5 July 1914 the Austrian ambassador presented Wilhelm II and Chancellor Bethmann-Hollweg with a request for backing in any action against Serbia. Wilhelm gave it: the so-called blank cheque. Germany pledged unconditional support. The cheque mattered because Vienna had hesitated before; with Berlin behind it, Austria-Hungary felt free to risk a wider war. Some historians, following Fritz Fischer’s controversial 1961 thesis Griff nach der Weltmacht, argue the blank cheque shows Germany deliberately welcomed war. Others, including Clark, argue Berlin expected localisation and gravely misjudged.
The Ultimatum, 23 July
On 23 July 1914 Austria-Hungary delivered to Serbia an ultimatum so severe it was designed to be rejected. It demanded Serbian suppression of anti-Austrian publications, dissolution of nationalist societies, dismissal of named officials, and the right of Austrian officials to enter Serbia to investigate the assassination. Serbia was given 48 hours. Serbia, advised by Russia, accepted almost every demand — but rejected the right of Austrian officials to operate on Serbian soil as a violation of sovereignty. Austria-Hungary declared the reply unsatisfactory and broke off diplomatic relations on 25 July. War was declared on Serbia on 28 July, exactly one month after Sarajevo.
Mobilisation Cascade, 30 July - 4 August
From 30 July events accelerated faster than diplomats could keep up. Russia ordered partial mobilisation in support of Serbia, then full mobilisation on 30 July when partial proved technically impossible. Germany, whose Schlieffen Plan required defeating France before Russia could fully mobilise, demanded Russia stand down. When Russia refused, Germany declared war on Russia on 1 August, on France on 3 August, and invaded neutral Belgium on the way to Paris on 4 August. Britain, citing the 1839 Treaty of London guaranteeing Belgian neutrality, declared war on Germany the same evening. Within seven days a Balkan dispute had become a continental war.
Several factors made July 1914 different from earlier crises. Mobilisation timetables had grown so detailed that any delay risked strategic disaster — military leaders pressed politicians to mobilise quickly. Germany and Russia had no direct telephone link; messages travelled through diplomatic channels measured in hours. Each side believed the other intended war and acted on the worst-case assumption. Sir Edward Grey’s British proposal for a four-power conference was rejected by Germany on 27 July. By the time Wilhelm and Tsar Nicholas II exchanged personal ‘Willy-Nicky’ telegrams begging each other to reconsider, the German army was already on the move. The crisis showed how rapidly the alliance system could turn a regional dispute into general war.
The July Crisis ran from 28 June to 4 August 1914. Key dates: blank cheque (5 July), ultimatum to Serbia (23 July), Austrian declaration of war on Serbia (28 July), Russian full mobilisation (30 July), German declarations on Russia (1 August) and France (3 August), and British declaration on Germany (4 August) after the invasion of Belgium.