I had to paint up a USMC Quick Reaction Force for a Ghengis Con scenario. It's an arctic scenario, so how do Marines fight in the snow? A little research later, I can tell you the answer is: Snow Marpat!
And one of the best places to do research is a website called Camopedia.org. Its a camouflage specific website and they have patterns from all over the world and also into history.
Breaking out my Peter Pig 15mm moderns, I found a squad that would work for me. It turned out I needed to do a little research on my USMC TO&E.
Here's the final result: