Can I get a military id?

Ok, Im not sure if I can do this but...I was born on Ft Belvoir. (My dad was honor guard at Arlington National Cemetary) I am going to the DC area in July and would like to go on base to take pics of the hospital etc. My father DID NOT retire out of the military. He got a hardship discharge because my brother was born autistic and it was really bad. Now heres where it gets even more tricky. I lived with my grandparents from the times I was 12-16 (and then I got married) My grandpa has since ped away but he was retired navy and claimed me on his tax refunds. (not my legal guardian...I was just his dependent) Can I get a military dependant Id? I just want to get on base to see where I was born.