Many names were known, but some weren’t.
Tens of thousands of documents, containing 22,000 names, addresses, telephone numbers and family contacts of Islamic State jihadis, have been obtained by Sky News.
Nationals from at least 51 countries, including the U.K., had to give up their most personal information as they joined the terror organisation. Only when the 23 question form was filled in were they inducted into IS.
Photo by coolloud
Comments
Comments are turned off for this article.