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Early years

Shortly after graduation, he was arrested by the police for his anti-monarchist activities. Following confinement for several months he was released only with the support of Rıza Pasha, his former school director. After his release, Atatürk was assigned to the Fifth Army based in Damascus as a Staff Captain in the company of Ali Fuat (Cebesoy) and Lütfi Müfit (Özdeş). He joined a small secret revolutionary society of reformist officers led by a merchant Mustafa Elvan (Cantekin) called Vatan ve Hürriyet ("Motherland and Liberty"). On 20 June 1907, he was promoted to the rank of Senior Captain (Kolağası) and on 13 October 1907, was assigned to the headquarters of the Third Army in Manastır. He joined the Committee of Union and Progress, with membership number 322, although in later years he became known for his opposition to, and frequent criticism of, the policies pursued by the CUP leadership. On 22 June 1908, he was appointed the Inspector of the Ottoman Railways in Eastern Rumelia (Doğu Rumeli Bölgesi Demiryolları Müfettişi). In July 1908, he played a role in the Young Turk Revolution which seized power from Sultan Abdülhamid II and restored the constitutional monarchy.

He was proposing depoliticization in the army, a proposal which was disliked by the leaders of the CUP. As a result, he was sent away to Tripolitania Vilayet (present Libya, then an Ottoman territory) under the pretext of suppressing a tribal rebellion towards the end of 1908. According to Mikush however, he volunteered for this mission. He suppressed the revolt and returned to Constantinople in January 1909.

In April 1909 in Constantinople, a group of soldiers began a counter-revolution (see 31 March Incident). Atatürk was instrumental in suppressing the revolt.

In 1910, he was called to the Ottoman provinces in Albania. At that time Isa Boletini was leading Albanian uprisings in Kosovo, and there were revolts in Albania as well. In 1910, Atatürk met with Eqrem Vlora, the Albanian lord, politician, writer, and one of the delegates of the Albanian Declaration of Independence.

Later, in the autumn of 1910, he was among the Ottoman military observers who attended the Picardie army manoeuvres in France, and in 1911, served at the Ministry of War (Harbiye Nezareti) in Constantinople for a short time.