I'm trying to get my drivers license, but I was told I was not a US citizen. But I serviced in the army for two year from 1963 to 1965, and I also went to school over here and married a US citizen. I need to know what to do?

Marrying a US Citizen doesn't make you a citizen, going to school here doesn't make you a citizen either... serving in the Army didn't make you a citizen either, but THAT might have made you eligible (none of its automatic, there would have been some sort of a naturalization process and cerimony).

You should inquire with the INS office about that and find out what can be done.

So.
1. where were you born ?
2. what birth certificate do you have.
3. what is your legal status in US. How did you get there?