My husband is signing up for uav operator and we need to pick bases. How do we find out which bases have UAVs?

If he goes to an AEB then there is only 4 choices.

Korea
Ft. Hood Texas
Hunter Army Airfield Georgia
Weisbaden Germany

I am not sure what an AEB is?
He is going into the Army, if that makes a difference.... The one's I know of are:

Fort Rucker, AL
Aberdeen Proving Ground, MD
Fort Benning, GA
Fort Eustis, VZ
Fort Gordon, GA
Fort Huachuca, AZ
Fort Knox, KY
Fort Lee, VA
Fort Leonard Wood, MO
Fort Monmouth, NJ
Fort Sill, OK
Picatinny Arsenal, NJ
Redstone Arsenal, AL
and I've heard Fort Lewis, WA, but not sure..

We would really like to stick to the West or overseas such as Germany...

You will definitely be west at least for six months or so. His school will be at Ft. Huachuca. Not very many actually get stationed here afterwards though. I might meet your husband as I just hired on to be an instructor at the school. Ft Huachuca and Sierra Vista aren't bad. But I wouldn't plan on getting stationed here.

by the way FT Lewis Wa. is a definite place where they have UAV's I know several operators that have been based there.

I am stationed at FT Bliss and I am a UAV Operator. Also there are posts all over the US most any place that has a BCT will have at least one UAV platoon there.

Every one has UAVs. Depending on which one he ends up working on will either narrow it down or increase the number of posts.