okay, i have signed to become a reconnaissance marine and im wanting to get into force recon but i also kno there are 2 types of reconnaissance marine force recon and battalion recon and im just wanting to know what desides what u get into do u sign for force recon or does the corps deside.

You'll be assigned to a recon battalion. Force Recon is not for first term Marines.

Here's the qualifications/process for Force Recon:
http://specialoperations.military.com/marine-force-recon/join.html