Membership in MOAA is open to active duty, retired and former officers (commissioned and warrant) of Reserve, National Guard, and the seven uniformed services: Army, Navy, Air Force, Marine Corps, Coast Guard, Public Health Service and National Oceanic and Atmospheric Administration. Widows and Widowers of the same group may join as Auxiliary and spouses of current members may join as Spouse Members. This section of the website provides information and links to key references covering annuity benefit entitlements for survivors of members eligible for providing survivor benefits to eligible beneficiaries.