This book showcases new historical research on foreign soldiers, including an overview of the early modern period and numerous case studies which cover the last 175 years and stretch over 5 continents. The last two decades have seen the term ‘foreign fighter’ enter our everyday vocabulary. The insurgencies in Afghanistan and Iraq, the Syrian Civil War and the rise and fall of the Islamic State group have sparked public interest in the phenomenon of people choosing to leave their own country and fight in a foreign conflict. Foreign fighters, their origins, motives, activities and potential danger to their home countries have become subjects of debate, attracting contributions from politicians, military personnel, the media, political scientists, legal scholars but to a much lesser extent from historians. The ten essayss in this volume showcase new historical research on foreign military labour. The aim of the volume is to better understand the experiences and challenges faced by both the foreigners and the host country, particularly its armed forces, and to highlight the significance of these trends to the contemporary debate on foreign fighters. The chapters in this book were originally published as a special issue of the journal European Review of History.

Foreign Fighters is the comprehensive study of foreign fighters examines patterns of recruitment using original data sets and detailed diverse case studies, and how recruiters use frames of existential threat to strengthen rebel groups.

Ever since the Soviet invasion of Afghanistan in 1979, fighters from abroad have journeyed in ever-greater numbers to conflict zones in the Muslim world to defend Islam from-in their view-infidels and apostates. The phenomenon recently reached its apogee in Syria, where the foreign fighter population quickly became larger and more diverse than in any previous conflict. In Road Warriors, Daniel Byman provides a sweeping history of the jihadist foreign fighter movement. He begins by chronicling the movement's birth in Afghanistan, its growing pains in Bosnia and Chechnya, and its emergence as a major source of terrorism in the West in the 1990s, culminating in the 9/11 attacks. Since that bloody day, the foreign fighter movement has seen major ups and downs. It rode high after the 2003 US invasion of Iraq, when the ultra-violent Al Qaeda in Iraq (AQI) attracted thousands of foreign fighters. AQI overreached, however, and suffered a crushing defeat. Demonstrating the resilience of the movement, however, AQI reemerged anew during the Syrian civil war as the Islamic State, attracting tens of thousands of fighters from around the world and spawning the bloody 2015 attacks in Paris among hundreds of other strikes. Although casualty rates are usually high, the survivors of Afghanistan, Syria, and other fields of jihad often became skilled professional warriors, going from one war to the next. Still others returned to their home countries, some to peaceful retirement but a deadly few to conduct terrorist attacks. Over time, both the United States and Europe have learned to adapt. Before 9/11, volunteers went to and fro to Afghanistan and other hotspots with little interference. Today, the United States and its allies have developed a global program to identify, arrest, and kill foreign fighters. Much remains to be done, however-jihadist ideas and networks are by now deeply embedded, even as groups such as Al Qaeda and the Islamic State rise and fall. And as Byman makes abundantly clear, the problem is not likely to go away any time soon.

This book offers various perspectives, with an international legal focus, on an important and underexplored topic, which has recently gained momentum: the issue of foreign fighters. It provides an overview of challenges, pays considerable attention to the status of foreign fighters, and addresses numerous approaches, both at the supranational and national level, on how to tackle this problem. Outstanding experts in the field – lawyers, historians and political scientists – contributed to the present volume, providing the reader with a multitude of views concerning this multifaceted phenomenon. Particular attention is paid to its implications in light of the armed conflicts currently taking place in Syria and Iraq. Andrea de Guttry is a Full Professor of International Law at the Scuola Superiore Sant’Anna, Pisa, Italy. Francesca Capone is a Research Fellow in Public International Law at the Scuola Superiore Sant’Anna. Christophe Paulussen is a Senior Researcher at the T.M.C. Asser Instituut in The Hague, the Netherlands, and a Research Fellow at the International Centre for Counter-Terrorism – The Hague.

In conflict zones around the world, the phenomenon of foreign insurgents fighting on behalf of local rebel groups is a common occurrence. They have been an increasing source of concern because they engage in deadlier attacks than local fighters do. They also violate international laws and norms of citizenship. And because of their zeal, their adversaries - often the most powerful countries in the world - are frequently incapable of deterring them. Foreign fighters have made headlines in recent wars in Afghanistan, Iraq, and Somalia, and the term is widely equated with militant Islamists. However, foreign fighters are not a new phenomenon. Throughout modern history, outside combatants have fought on behalf of causes ranging from international communism to aggrieved ethnic groups. Analyzing the long history of foreign fighters in the modern era helps us understand why they join insurgencies, what drives their behavior, and what policymakers can do in response. In Foreign Fighters, David Malet examines how insurgencies recruit individuals from abroad who would seem to have no direct connection to a distant war. Remarkably, the same recruiting strategies have been employed successfully in all foreign fighter cases, regardless of the particular circumstances of a conflict. Malet also catalogues foreign fighters in civil wars over the past two centuries, providing data indicating that they are disproportionately successful and growing in number. Detailed case histories constructed from archival material and original interviews demonstrate the same recruitment patterns in highly diverse conflicts including the Texas Revolution, the Spanish Civil War, the Israeli War of Independence, and the Afghanistan War. The results show that foreign fighters from Davy Crockett to George Orwell to Osama bin Laden create and respond to strategically crafted appeals to defend transnational communities under dire threat.

Warfare in the modern era has often been described in terms of national armies fighting national wars. This volume challenges the view by examining transnational aspects of military mobilization from the eighteenth century to the present. Truly global in scope, it offers an alternative way of reading the military history of the last 250 years.

The term ‘foreign fighters’ describes nationals of one state who – for whatever variety of reasons and motives – travel abroad to take part in a conflict in another state without the promise of financial reward. The majority of attention has so far been focused on the nationals of Western European states who have gone to fight for the so-called Islamic State in Syria. There exist, however, other examples of contemporary European foreign fighters whose travails, motivations and returns have been largely unnoticed and underappreciated. This books attempts to balance this state of affairs by bringing to the fore some lesser known cases of non-terrorist but foreign fighters related to the conflict in Ukraine, and situating them against the backdrop of the larger mobilization for the war in Syria. This book presents edited versions of the 12 papers presented at the NATO Advanced Research Workshop (ARW) ‘Not Only Syria? Foreign Fighters: A Threat to NATO Allies and Their Neighbours’. The workshop was held in Chisinau, Moldova, in May 2016, and brought together researchers and experts in the field to discuss the differences, similarities and parallels between different groups of foreign fighters engaged in the conflicts in Syria and the Ukraine. The papers include contributions from the Netherlands, Belgium, Denmark and Poland among others, and examine cases of foreign fighters from these and other countries. The book will provide an interesting context to researchers who have, up to now, looked only at a single set of such fighters, and will lead to tangible recommendations on how to develop policies to address the threat posed by returnees from any conflict.