With 300 Marines, you could probably take over Iraq if you wanted to and get rid of ISIS completely. Make no mistake about it, Marines are war fighters. I mean they are really good at what they do. The only time they are not good at what they do is when someone puts the shackles on them.
I have a great belief in spiritual force, but I think we have to realize that spiritual force alone has to have material force with it so long as we live in a material world. The two together make a strong combination.