Ottoman ruler, the 35th and penultimate Sultan, who was succeeded by his half-brother Mehmed VI. He was the son of Sultan Abdülmecid I. His nine-year reign was marked by the cession of the Empire’s North African territories and the Dodecanese Islands, including Rhodes, in the Italo-Turkish War, the traumatic loss of almost all of the Empire’s European territories west of Constantinople in the First Balkan War, and the entry of the Empire into World War I, which would ultimately lead to the end of the Ottoman Empire.
Mehmed V’s most significant political act was to formally declare jihad against the Entente Powers (Allies of World War I) on 14 November 1914, following the Ottoman government’s decision to join the First World War on the side of the Central Powers.
This was the last genuine proclamation of jihad in history by a Caliph, as the Caliphate lasted until 1924. The proclamation had no noticeable effect on the war, despite the fact that many Muslims lived in Ottoman territories. The Arabs eventually joined the British forces against the Ottomans with the Arab Revolt in 1916.
Mehmed V hosted Kaiser Wilhelm II, his World War I ally, in Constantinople on 15 October 1917. He was made Generalfeldmarschall of the Kingdom of Prussia on 27 January 1916, and of the German Empire on 1 February 1916.
Mehmed V died at Y?ld?z Palace on 3 July 1918 at the age of 73, only four months before the end of World War I. Thus, he did not live to see the downfall of the Ottoman Empire.
Link to Wikipedia biography