Nicolette has given you a very good answer, in that gaining knowledge for yourself is most important, as your husband must want to help himself. You may be there to support him in his efforts, however he must do all the hard work upon himself, if there is to be any lasting changes. Do remember to take good care of yourself and your son in this as well, as the two of you are also important.

Although my husband is recently retired, I was a military wife, though I am in Canada rather than the USA. I read in your introduction that there is no support for you where you are stationed? How about for your husband? Most Canadian bases have some resources for counseling. Are you certain there is nothing for him? Perhaps he should speak to his physician? Even should your husband not want to leave the Marines, there is often therapy offered on bases. PTSD is slowly becoming less of a stigma in the military (though VERY slowly!). Take care.