# World War I and the Collapse of the Ottoman Caliphate

The Empire Enters the Abyss

When the Ottoman Empire entered the First World War in October 1914 (Dhul Hijjah 1332 AH) with a secret alliance with Germany, it was a decision that would end four centuries of Ottoman history and fundamentally alter the political geography of the Muslim world. The consequences — the loss of the Arab provinces, the abolition of the Caliphate, and the establishment of Western colonial mandates across the Middle East — resonate to this day.

The decision was made by the Young Turk (CUP) leadership, specifically the three-man inner circle of Enver Pasha (War Minister), Talaat Pasha (Interior Minister), and Cemal Pasha (Navy Minister). Their reasoning was partly pragmatic and partly ideological: Germany was the dominant military power in Europe; a German victory might recover territories lost in the Balkan Wars; the Entente powers (Britain, France, Russia) represented the colonizing powers that threatened Ottoman interests in Egypt, North Africa, the Persian Gulf, and the Caucasus.

Sultan Mehmed V, a constitutional monarch without real power, was presented with a fait accompli. The Entente had been planning to partition the Ottoman Empire even without war — the secret agreements that would become the Sykes-Picot Agreement were already being drafted. Whether the Ottoman choice of alliance with Germany was catastrophically wrong is a judgment that historians continue to debate; what is not debatable is the scale of the resulting disaster.

The Jihad Proclamation

On November 11, 1914, the Sheikh al-Islam Ürgüplü Hayri Effendi issued a fatwa of jihad on behalf of the Ottoman state. The fatwa declared that it was fard ayn (individually obligatory) for all Muslims to fight the enemies of the Ottoman Caliphate — specifically Britain, France, Russia, and their allies. Muslims living under colonial rule were called to rise against their occupiers.

The call was designed to destabilize the British Empire's Muslim-majority territories — India, Egypt, Sudan, and the Malay peninsula — as well as French North Africa and Russian Central Asia. German strategists hoped that a global Muslim uprising would stretch Allied forces beyond their capacity.

The response was almost entirely disappointing. While individual Muslims expressed sympathy, there was no significant uprising. Muslim soldiers in the British Indian Army — numbering in the hundreds of thousands — largely continued to fight loyally for Britain, including on the Western Front. British Muslim scholars were quick to point out that the Ottoman Caliphate's call to jihad against countries that had not attacked Islamic holy sites was theologically problematic.

The failure of the jihad proclamation revealed something important: the Ottoman Caliphate's symbolic authority among Sunni Muslims worldwide was real but limited. The Sultan-Caliph could inspire respect and loyalty in normal times; he could not mobilize a global military uprising on demand. Political authority and religious prestige are not the same thing.

Gallipoli: The One Great Victory

The Gallipoli campaign (February 1915 - January 1916 / Rabi al-Awwal 1333 - Rabi al-Awwal 1334 AH) stands as the single major Ottoman military success of the war and one of the most costly failures of British and Anzac forces. The Allied plan was to force the Dardanelles Straits, capture Istanbul, knock the Ottoman Empire out of the war, and open a supply route to Russia.

The naval attack on the Straits (March 1915) failed when Allied warships struck mines and were turned back. The subsequent land invasion at Gallipoli on April 25, 1915 — a date still commemorated as Anzac Day by Australia and New Zealand — began a brutal eight-month campaign on the rocky Gallipoli Peninsula. The Ottomans, commanded in a critical sector by the young Mustafa Kemal (later Atatürk), held the high ground against repeated Allied assaults.

Approximately 250,000 Allied soldiers were killed, wounded, or fell sick; Ottoman casualties were similar or higher. The campaign ended in an Allied evacuation (January 1916) — skillfully executed as the retreat was the one component the Allies managed well. For the Ottomans, Gallipoli became a symbol of national resistance; for the CUP, it provided the prestige that helped maintain their hold on power despite disasters elsewhere.

The significance of Gallipoli in Muslim consciousness: it demonstrated that Ottoman forces could resist and defeat the most powerful Western military powers when defending their territory — a fact that gave the Muslim world some confidence even amid the empire's overall decline.

The Mesopotamia Campaign

British forces invaded Ottoman Iraq (Mesopotamia) from their base in Basra, which they had occupied in November 1914. The campaign was driven by strategic need — protecting the oil facilities at Abadan in Persia and threatening the Ottoman position — but the British command badly underestimated the difficulty of the terrain and the resilience of Ottoman resistance.

The disastrous Siege of Kut (December 1915 - April 1916) saw a British force under General Charles Townshend surrounded and forced to surrender after a failed relief attempt. Approximately 13,000 British and Indian soldiers surrendered to the Ottomans — the largest British military surrender since Yorktown. Many died in captivity from poor treatment.

The British eventually regrouped, brought competent commanders, and captured Baghdad in March 1917. But the Iraq campaign cost enormous resources and lives and was ultimately a product of imperial strategic calculation rather than any immediate military necessity.

Palestine and the Holy Land

The Palestine campaign (1916-1918) brought the Holy Land under British control. General Edmund Allenby launched a major offensive in the autumn of 1917. The Battle of Beersheba (October 31, 1917) featured the famous charge of the Australian Light Horse — the last great cavalry charge in history — that broke the Ottoman lines.

Jerusalem fell on December 9, 1917. Allenby's entry into the city on foot — in deliberate contrast to Kaiser Wilhelm II's ostentatious mounted entry in 1898 — was designed as a respectful gesture toward the holy city. The Ottoman governor had surrendered to two British sergeants who had gone ahead of the main force and found themselves unexpectedly in possession of Jerusalem.

For the Muslim world, the fall of Jerusalem to a non-Muslim power for the first time since Saladin's liberation of the city in 583 AH / 1187 CE was deeply painful. Al-Masjid al-Aqsa — the Farthest Mosque of the Night Journey, the first qibla of the Muslims — was now under British control. The impact on Muslim consciousness was profound.

The Arab Revolt and Its Ambiguities

The Arab Revolt launched by Sharif Hussein of Mecca in June 1916, with British support, complicated the Ottoman war effort in Arabia and provided a narrative of Arab liberation that served both Arab nationalist and British imperial interests. Ottoman forces were required to maintain significant garrisons in the Hejaz throughout the war, resources that could not be deployed elsewhere.

The theological complexity of the revolt — a Muslim ruler with British support fighting against the Ottoman Caliphate — was recognized at the time. The CUP presented the revolt as treason, and many Muslim scholars outside Arabia agreed. Proponents argued that the CUP's government had abandoned Islamic principles and that the revolt was for Arab liberation from a colonial-nationalist government that had co-opted the Caliphate.

The Armenian Genocide

The most devastating event on the Ottoman home front was the systematic destruction of the Armenian population of Anatolia beginning in April 1915. The mass deportations, massacres, and death marches resulted in the deaths of approximately 600,000 to 1.5 million Armenians — one of the 20th century's most thoroughly documented cases of mass atrocity.

The CUP leadership's decision to deport the entire Armenian population of Eastern Anatolia — men, women, children, and elderly — on the stated grounds of military security was not merely criminal under any standard of Islamic ethics; it violated the explicit Quranic prohibition against killing innocent people. The Quran states (5:32): "Whoever kills a soul, unless for a soul or corruption on earth, it is as if he has killed all mankind."

The complicity of Kurdish tribal leaders in the massacres — and the subsequent accountability demanded by Ottoman courts-martial — was real and documented. The post-war Ottoman government, under the influence of the Allied occupation, did hold trials and issued death sentences for the principal organizers, though the Three Pashas had already fled and were later killed by Armenian operatives.

The Armistice and Occupation

The Armistice of Mudros (October 30, 1918) effectively ended the Ottoman war. Allied forces occupied Istanbul beginning in November 1918. The Three Pashas fled on a German submarine. The Sultan Mehmed VI, restored to power by the Allied occupation, collaborated with the occupiers and began prosecuting CUP leaders.

The Treaty of Sèvres (August 1920) attempted to dismember Anatolia itself — awarding large portions to Greece, Armenia, and Italy, with French and British zones. This treaty, had it been implemented, would have left the Turkish Anatolian heartland as a rump state under close European supervision.

The treaty was never implemented. Mustafa Kemal organized Turkish resistance in Anatolia, defeating Greek forces in the Turkish War of Independence (1919-1922), and forcing a renegotiation — the Treaty of Lausanne (1923) established the current boundaries of Turkey.

The End of the Caliphate

The Turkish National Assembly abolished the Ottoman Sultanate in November 1922 and then the Caliphate itself in March 1924. With this act, the political institution that had existed in various forms since the death of the Prophet ﷺ — and that had been held by the Ottoman house since Sultan Selim I in 1517 — ceased to exist.

The Muslim world was left without a recognized Caliph for the first time since the Rashidun era. The loss was experienced not merely politically but spiritually — as a sign of Muslim weakness and disunity, and as an obligation to work toward restoration of Islamic governance.

The hadith of the Prophet ﷺ recorded by Imam Ahmad: "The knots of Islam will be untied one by one. Whenever a knot is untied, the people hold on to the next one. The first to be untied will be the knot of governance (hukm), and the last will be the knot of prayer (salah)." Many scholars saw the abolition of the Caliphate as the beginning of the unraveling of Islamic governance that the Prophet ﷺ had foretold.

Sources:

Fromkin, David. A Peace to End All Peace: The Fall of the Ottoman Empire and the Creation of the Modern Middle East. Henry Holt, 1989.
McMeekin, Sean. The Ottoman Endgame: War, Revolution, and the Making of the Modern Middle East, 1908-1923. Penguin, 2015.
Zürcher, Erik Jan. Turkey: A Modern History. I.B. Tauris, 2004.
Hanioğlu, M. Şükrü. A Brief History of the Late Ottoman Empire. Princeton University Press, 2008.
Akçam, Taner. A Shameful Act: The Armenian Genocide and the Question of Turkish Responsibility. Henry Holt, 2006.
Murphy, David. The Arab Revolt 1916-18: Lawrence Sets Arabia Ablaze. Osprey, 2008.
Allenby, General Edmund. Dispatches from the Palestine Campaign. London, 1919.

World War I and the Fall of the Ottoman Empire