AD years towards retirement?

[kat1/75]

I have 4 years AD and want to know if I go into the guard do I have to only do 16 years or do I have to do 20 years, for my retirement. I understand that I won't receive benefits until I am 60. I am 36 years old and am curious what the mandatory retirement age is in the military. Or do I have nothing to worry about but using my walker to jump out the door.

[SGT_Dan]

You would only have to do 16. But you would not be able to collect retirement until you are... i believe it is 64. The only way that you would be able to collect after 20 years of service is to do 20 years total active duty time.