Boston University provides VetChange in partnership with the Department of Veterans Affairs National Center for PTSD. A free online program for Veterans concerned about their drinking: https://vetchange.org/home

Here are some other sites that have been promoted within the VA:

http://www.veterandrinkerscheckup.org/

http://rethinkingdrinking.niaaa.nih.gov/

http://www.smartrecovery.org/overcoming-addictions/index.htm