If memory serve you posted that your husband has a military background. It can't be used as an excuse, but believe me, there is a fair bit of brutalisation in military training and life. Coming to terms with situations very different to those you have been "programmed" to deal with, in a manner that is appropriate can be an almost impossible task for some people, it depends very much on the individual. Do you know if he was a relaxed and open child? Shows of emotion, showing someone that you care for them and all sorts of other behaviour can be seen in military terms as a sign of weakness, if that is his perception then I can only suggest that an appropriate councilor(not the usual, he will see that as weakness), or, someone who has come out of the other end of his situation (maybe someone older who has made a go of a relationship and developed the maturity thast entails). In the meantime, very, very, very slowly inroduce the idea that the strength he needed before is a weakness elsewhere and that to be a complete and strong person he has to be able to face and deal with his emotions.
as an afterthought, cold reason will work better than emotional appeal, and if he is as I once was then I'd think seriously about if its worth it, only you know that.