As current law stands right now, selective service aka the draft, is extremely limted. You are no longer draftable after the age of 26. It was one of the things I though about and looked up when I was getting ready to ETS. btw... they draft younger to older, so the closer you are to 26, the less likely your lot is to be drawn. I made sure I couldn't be brought back in under draft, inactive reserves, or ROAD status.
from the sss.gov website...
Need a Status Information Letter or NOT?
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Request for Status Information Letter
There may be a time when a man declares that he is not registered with the Selective Service System and is applying for any of the following benefits or programs linked to the registration requirement:
federal student loans and grant programs
federal job training under the Workforce Investment Act
federal jobs or security clearance as a contractor
U.S. citizenship
He may ask that the agency granting the benefit or financial aid officer processing his loan not to hold up the approval process pending a status information letter from the Selective Service System because there are certain conditions that do not require a man to have a status information letter from Selective Service.
No status information letters are required from the Selective Service System for :
Note to financial aid officers: If the man falls within one of the following categories, a Status Information Letter from Selective Service is NOT required if he can provide a copy of supporting documentation proving his case to your satisfaction. For more information, please consult the latest Student Financial Aid Handbook, Volume 1, Chapter 5, Page 1-61. To refer to the handbook, please click here.
Non-U.S. male who came into this country for the first time after his 26th birthday
Date of entry stamp in his passport, I-94 with date of entry stamp on it, or a letter from the U.S. Citizenship and Immigration Services (USCIS) indicating the date the man entered the United States. If the men entered the U.S. illegally after his 26th birthday, he must provide proof that he was not living in the U.S. from age 18 through 25. Resident Alien Card (Green Card) is not valid as proof of the date of entry to the United States.
Non-U.S. male on a valid non-immigrant visa
For example, if the man entered the United States as an F-1 student visa and remained in that status until his 26th birthday, he would need to provide documentation indicating that he was admitted on an F-1 visa and attended school full-time as required. Acceptable documentation for this situation include a copy of his I-20 form or a letter from the school he attended indicating his full-time attendance as a non-immigrant alien. The same thing applies for all non-immigrant statuses.
A male born prior to 1960
Official government issued document showing date of birth such as state ID card, driver’s license, passport, birth certificate.
A veteran
DD-214 or current fulltime active duty orders, military ID card.
Who Must Register
Almost all male U.S. citizens, and male aliens living in the U.S., who are 18 through 25, are required to register with Selective Service. It's important to know that even though he is registered, a man will not automatically be inducted into the military. In a crisis requiring a draft, men would be called in sequence determined by random lottery number and year of birth. Then, they would be examined for mental, physical and moral fitness by the military before being deferred or exempted from military service or inducted into the Armed Forces.
Men 18 through 25 years old may still register with Selective Service up until their 26th birthday. To determine who must register with Selective Service, check here
http://www.sss.gov/FSwho.htm
A chart of who must register is also available.
There are various ways to register:
http://www.sss.gov/FSregist.htm