I'm a guard soldier in the Special Forces Qualification Course at Bragg. I've just started, and will be here for 3 years of training on active duty orders. My fiancé is shipping for active duty basic training in a couple of months. My question is, am I able to get her stationed here at Bragg with me, since I'm PCS'd here on active duty orders? Any and all help will be appreciated!

Shouldn't you ask your CO?

Yes I agree. You should be asking your CO in the first place. But I don't think the military will allow it. It will distract both of you.

There is a Married Army Couples Program explained in the following. Don't know about fiances though, doubt that unmarried qualifies for any consideration.
Army Married Couples Assignment Program

Edit: Just noted your question indicates marriage planned- so maybe you can fit in.

Normally not until married. This is something you will have to work out though the proper chain of commands.