Now a major, Omar completed a mapping assignment in Bulgaria and the Danube territories, gaining detailed knowledge of the ground which was to serve him well in the future. Chrzanowski also milked his ideas for re-organizing the Army; in return he smoothed the way for Omar's introduction into Turkish society. He thereby met and married a rich heiress Adviye Hanım (a daughter of Çerkes Hafız Mehmed Pasha), the start of his meteoric rise in Ottoman military circles. There is no doubt that Omar's marriage opened all the right doors for him, but equally no doubt that he proved equal to the challenges of high command which resulted. He became writing-master to the Ottoman heir, Abd-ul-Medjid, and on the succession of the latter in 1839 was made a colonel. He was shortly afterwards appointed Military Governor of Constantinople. His only daughter, Saffet Hanım, married Mustafa Celalettin Pasha.