"George Z. Bush" wrote

Unless they changed the law back in the 70s, in my day the law didn't
require
you to register if you had volunteered and were waiting for your reporting
date.
I may be wrong, but that's the way I remember it.

They called it "Inactive Reserve". My disharge shows 6 months if inactive
reserve and 18 days of active duty (I got a medal :0). Later on I got into much
more interesting "civilian" activities. But I can't tell you, you'd just laugh.

-- Charlie Springer