Iran is recruiting Afghan refugees to fight in Syria, promising a monthly salary and residence permits in exchange for what it claims to be a sacred endeavour to save Shia shrines in Damascus.
The Fatemioun military division of Afghan refugees living in Iran and Syria is now the second largest foreign military contingent fighting in support of Bashar al-Assad, the Syrian president, after the Lebanese militia Hezbollah.
http://www.businessinsider.com/afghan-refugees-in-iran-fighting-for-assad-in-syria-2015-11