Do you have to have a military ID to go fishing there?

No, the lake is used by tons of people and stocked by the state. A KY fishing licence is required, if you fish in the creek you must also have a trout stamp.

I'm sure ,it's a mil campground. But call them ,mwr

I have never fished there , but have been told that you do not have one. I would contact MWR at Fort Knox & ask. Sorry I couldn't be of further help.