I am a Navy wife and a Catholic and I never even heard of these orgs. We typically attend Mass off-base, so it’s not really that surprising I guess. We don’t live on post now, so our parish church is a neighborhood one.
I hope your search brings you much joy, peace and most of all – closeness to God.
I don’t think anyone else suggested it, but if you are discerning our faith you should check into RCIA first. Classes start in September or October world-wide in any Catholic Church. I noticed the military chapels (even in hospitals) offer it. So visit your local parish church (on post or off) and inquire about RCIA. (Rite of Christian Initiation for Adults) To become a fully “practicing” Catholic (receiving Sacraments) one must go through this program. You don’t have to join the church if you take the RCIA classes – but it is an excellent way to learn more about our faith.
Also the book Catholicism for Dummies (not implying you are a “dummy”) is an EXCELLENT and concise intro to our faith. I highly suggest you pick up a copy. It is a super-quick read while VERY informative.
Good luck! And welcome to our forums!