A Devsirme slave collecting officer with new "conscript" slaves gathered from christian conquered nations, especially in the Balkans. The girl probably ended up in a Harem and the boys trained as Janissary soldiers or civil servants somewhere in the Ottoman Empire.This forced slavery system of young Christian boys from conquered peoples was institutionalized, ruthlessly efficient and lasted for centuries. It was called Devsirme (pronounced devshirm'eh, Տեւշիրմէ), which means "gathering" in Turkish, as in gathering fruits and vegetables! A very imaginative word to describe the forced enslaving of tens of thousands of future soldiers and servants to their absolute owner, the Ottoman Sultan ! Devsirme became the "lubrication" process and the "oxygenation" of the of the Ottoman engine for centuries and was as cruelly effective at the service of Topkapi Palace and the Sublime Porte.
A Janissary officer recruiting devsirme for Sultan Suleyman I (1495-1566), (painter Ali Amir Beg, 1558), Topkapi Palace archives: This is probably be the best classical devsirme miniature. Note the fearful young christian boys (front) in red robes watched by the recruiting Ottoman officer (seated) and guards. 
Mehter military band is thought to be the oldest military marching band in the world. The band's music is known as Janissary music, as most of the band members belonged to that group of Devsirme soldiers. It is believed that the Band "Mehter" was sent to the founder of the Ottoman empire Osman Gazi by a Seljuk Sultan. It is said the band have played every day after the afternoon prayers for the Ottoman ruler. The music of the Mehter lost its appeal after Sultan Mahmud II got fed up with their abusive power of the Janissary army units and massacred them by cannons and swords in 1826!
Janissary army standard bearers and Mehter musicians spearheading another attack of the Ottoman army. The Janissaries were undoubtedly the most famous of all the devsirme slaves. Fiercely militant and increasingly rebellious with time, the Janissaries became like a State within the State and rioted on many occasions. They are also known to be responsible for deposing several Sultans until they met their fate.The rules and regulations of the Devsirme were introduced under Sultan Murad II, about three decades before the fall of Constantinople (1453): The system was cruel in essence but very efficient and well designed. The Sultans and their advisers developed a system avoiding any hereditary Turkish aristocracy that could threaten their position on the long run. Therefore targeting only non-Muslims for the devsirme was easy, safe and convenient.

Jean Auguste Dominique Ingres: "The Turkish Bath/ Le Bain Turc," 1862 . These concubines and odalisques were mostly devsirme female slaves in an Ottoman Imperial Serail (seraglio), commonly known as Harem (from the Arabic word word "Haram" as in forbidden quarters of a palace).
"Manicure in the Harem in a Seraglio" (serail). The most famous Harem was at the Topkapi palace, Istanbul.
Jean-Léon Gérôme (1824-1904) "Harem Pool" -Oil on canvas/ Hermitage museum, St Petersburg, Russia The boys were sorted into different groups according to their fitness etc and sent either to train as soldiers or other tasks in special institution, palaces or even farming families. The initial training took 3 to 7 years, and during this time the boys learned Turkish and Ottoman lifestyles.
The most famous army troops of the devsirme were of course the Janissary (yeni-çeri means new-troops, Ենիչերի). The name "new" indicates very well what they were the beginning: An alternative to the old regular army which was becoming not too reliable. The Sultan needed to have new troops and formed the Janissary corps, because the old army put together by free men from many different tribes and allegiances was difficult to keep under control.
A yeniceri (Janissary) band ready to spread fear and intimidate the conquered people.Some of these devsirme students ended up as viziers and grand viziers (the highest administrative position). The famous Grand Vizier Sokollu Mehmet Pasha (1506-1573) was a devsirme of Serbian origin. Nevertheless, most devsirmeh were always practically considered as slaves to the Sultan despite their very high ranks. The Sultan could punish or even execute them without trial for an error or intrigue, real or perceived.
It is estimated that from the 15 th to the 17 century, between 200,000 and 300,000 devsirme boys were gathered, mostly in the Balkan countryside. Normally every 4 years, young minor Orthodox boys from the taxed communities were to be given to the Ottoman throne. Devsirme was promoted as a somehow honorable thing for the parents and a fast way to have a better life to the young children they gave to the tax collector. Being the "slave" of the sultan was considered to be an honor, as some of these slaves would eventually fill prestigious positions in the Ottoman society. The idea of devsirme being "good" for the kids was promoted as a golden opportunity for these boys guaranteeing them a safe and bright future as Sultan's slave and to get out of poverty. Bribes and other means of persuasion were also common to let the Christians parents give their sons to devsirme.
Corruption and lax lifestyle: Janissary relaxing and enjoying life. The increasingly lavish lifestyle of theses units became a problem for the Sultans. Many, if not most, of these elite legions were devsirme and became too powerful, almost a State within the State. They were seen as liabilities to the Sultans rather than as major assets like before. Their extermination was just a matter of time and came in early 19th century. The Greek war for Independence (1821-1830) proved once again that the Janissaries were no longer the infallible force as they had been historically. Their end was fast approaching. In 1826 news spread out that the Sultan Mahmud II was taking the necessary steps to form new European style army units. As expected or hoped, the Janissaries were furious and revolted one more time. But this time the Sultan had other plans and was well prepared. As the rioting Janissaries were advancing on the Palace in Istanbul, their barracks near the Hippodrome (Atmeydani) were set in fire by heavy artillery loyal to the Sultan and more than 4000 Janissaries were massacres. Survivors were arrested and executed in various other locations. It is reported that the last Janissary units were executed in Thessaloniki, modern day Greece. With that the final chapter the devsirme system broke beyond repair.
Modern Mehter band of the Janissary units. They are based at Istanbul's Military museum (Askeri Muze). They are now ceremonial in nature and perform to the public almost daily. They also go on tours around the world as the world's oldest known military marching band.The innovative and liberal Tanzimat reform program put in place from 1839 until 1876 was designed to "reorganize" the Ottoman society and government, including the now obsolete devsirme and the Kut. It was initiated on changes started by sultan Mahmud II and executed under sultan Abdulmecid I. It was initiated by reformists who understood why their Empire was growing weaker while neighboring countries were growing stronger. The Tanzimat was indeed of the highest importance to the survival of Ottoman Empire but failed miserably.

Janissary army war and massacre scene through the eyes of yet another romantic European painter.
"Occupation of Yerevan, Armenia by the Ottoman army under Ferhad Pasha"(miniature by Nakkas Osman,1597).© Krikor Tersakian, October 26, 2009 Montreal Canada