You can register online with Selective Service to pick your preferred branch in the event of a draft. Registration is required of any American citizen male that is over the age of 18. Most high schools have you fill out the paperwork for registration in your senior year so you may have already done so. You can check online to see if you have already registered and if you haven't it only takes a
. minute. Go to http://www.sss.gov/ for registration.
