cilayin

I'm confused as to what im doing on this level. I got the briefing and afterwards I've got no idea what to do so I ran around the camp trying to find something. I can't talk to anyone, I cant get in any vehicles, nothing. So I went north, cleared a camp, went further north and cleared that as well. I've taken down 30+... Am I missing something? What am I supposed to do? Do I need to restart the level? I'm getting kind of low on ammo, I have no idea where to even get some for my 107. Any help???