In Turkey, compulsory military service applies to all male citizens from 21 to 41 years of age. It is 6 months for all males regardless of education degree. Different rules apply to Turks abroad. For Turks with multiple citizenship, the conscription lapses if they have already served in the army of another country. Conscripts can be deployed in all parts of the Turkish armed forces, except in combat operations or active conflicts. For example, only professional soldiers are used in operations by Turkey against the PKK. Women are not conscripted, but they are permitted to become officers. The Conscription Law was introduced in 1919 and has stayed in force since then. However, the length of service has been successively reduced over time. Between 1919 and 1998, the average length of service was 18 months for non-educated males and 12 months for educated (university level). In 1998, these lengths were reduced to 12 months for non-educated conscripts and 6 months for educated ones. After 2001, the current length of service was introduced, with a bar on further reductions until 2024. The rules and procedures for conscription are set out in the Military Service Law in accordance with Article 72 of the Turkish Constitution. Ministerial circulars set out the rules and procedures for exemption from military service in exchange for a financial contribution or other form of compensation, and for discharge from military service in exchange for working in other government agencies. Articles 2, 25 and 26 of Turkey's Military Service Law stipulate that every man in Turkey must be conscripted and registered from January 1 of the year in which he turns twenty. Military service does not apply to women. A conscripted man is conscripted until January 1 of the year in which he turns 41. In the case of mobilization, men can be called up for military service up to the age of sixty-five. Turkish men legally residing abroad are required to do military service from the year they turn 19 until the end of the year they turn 38.