The long-lasting Ottoman Empire was a theatre of armed conflict and human displacement. Whereas military victories in the early modern period enabled its territorial expansion and internal consolidation, the later centuries were shaped by military defeat and domestic turmoil, setting hundreds of thousands, sometimes even millions of people in motion. Spanning from Europe to Asia, the book reassesses these movements. Rather than adopting a teleological approach to the study of the Ottoman defeat, it connects late Ottoman history to wider dynamics, extending or challenging existing concepts and narratives.