A Selective Service card indicates the individual is recognized, by Congress, as a member of the US militia, being an able-bodied male citizen 17-45, registered as our Founding Fathers prototyped in the Militia Act of 1792. The individual may be called up at any time and pressed into front-line service post haste. As a free adult citizen so recognized, they are expected to act as such.
Okay, I get it now, you are just trying to be funny.