Channel 4 News takes an interactive look at the rebel groups battling for Syria in 2013.

Channel 4 News has monitored and translated thousands of videos and social media updates posted by members of Syria's rebel groups.

In the first of a new series - Syria Files - this interactive graphic reveals the main groups and how they are operating.

Click on the name of the group at the top to explore details about their size, weapons, beliefs - and who funds them.

Research: Kamal Kaddourah, David Doyle
Graphic: Ciaran Hughes
Interactive will not work in Internet Explorer 8