In 2024 I joined Georgia State Defense Force. It is non paid volunteer job. Should I indicate that I joined military in 2024?

In 2024 I joined the Georgia State Defense Force. It is a non paid volunteer job.

First question is if I need to indicate that I joined the military in 2024? If so, since we are attachment of National Guard should I indicate that I am part of Naitional Guard?

Second question, since it is a nonpaid job, is there any tax-related benefits to even indicate that I joined GSDF?

Thank you.