Very cool piece. My only suggestion would be to eliminate the shadow on nthe archway from the cross. The light source is from above(note the shadows on the chest). Nice use of the source too.

Interesting, but would be more so with an SBS which might help explain the lighting on his chest. I personally don't get the point of the stone fence and would just delete it. I think the title overdescribes the image IMO. (I could see an angel as a soldier of God, but as a soldier of abstract 'faith' seems too much to me.)

I went to very abstract lightning as we can see here, that's why the shadow of the cross (more dramatic imo that way) and also the "minor angel of light" on the chest. And what comes to the title, I personally believe many people have (and fight for) a faith that has no God behind it. I didn't make it overly political or anything, just a simple young man fighting for (his own) faith.

Thanks for the comments, Pingenvy and Dan, highly appreciated.