Article content continued

Most of the ex-soldiers, reportedly numbering around 10 and including former paratroopers and French foreign legionnaires, are said to be fighting on behalf of the Islamic State of Iraq and the Levant (ISIL).

Most worrying is the reported presence of an ex-member of France’s elite First Marine Infantry Parachute Regiment, considered one of Europe’s most experienced special forces units and which shares the “Who Dares Wins” motto of the SAS.

The unnamed individual, of North African origin, had received commando training in combat, shooting and survival techniques. He served for five years before joining a private security company for which he worked in the Arabian peninsula, where he was radicalised before heading for Syria, according to L’Opinion, a news website.

One of the defectors had become the leader of a group of a dozen or so French-born Islamists operating in the Syrian region of Deir Ezzor who had all received combat training, reported Radio France International, or RFI.

Others, apparently in their twenties, were explosive experts. Some were Muslim converts while others were radicalised French from an “Arab-Muslim” background, said RFI.

Jean-Yves Drian, the French defence minister, confirmed the existence of a handful of ex-French military personnel among jihadist fighters in the Middle East, but tried to play down their presence, saying the phenomenon was “extremely rare”.

However, they will raise fears over the risk of a French version of the 2009 gun rampage at Fort Hood, the U.S. military base in Texas, where Nadal Hasan, a U.S. army major who turned to radical Islam, killed 13 servicemen scheduled to leave for Afghanistan.