Slave raiding is a military raid for the purpose of capturing people and bringing them from the raid area to serve as slaves. Once seen as a normal part of warfare, it is nowadays widely considered a war crime. Slave raiding has occurred since antiquity. Some of the earliest surviving written records of slave raiding come from Sumer (in present-day Iraq). Kidnapping and prisoners of war were the most common sources of African slaves, although indentured servitude or punishment also resulted in slavery.
The many alternative methods of obtaining human beings to work in indentured or other involuntary conditions, as well as technological and cultural changes, have made slave raiding rarer.
