I'm interested to hear the rest, but he's been through a lot. It will take some time for the dog inside to come out. Have some patience, be consistent in rewarding of good behaviors, and allow him to experience things at his own pace. Too much pressure can build negative associations with things.
When a dog saves the life of a man, it becomes clear that partnership knows no bounds.
Fama - T.E.D.D. OEF XI-XII (GSD)
Marshall - T.E.D.D. OEF XII-XIII (Lab)
Lucian - Med Alert (Cane Corso)
Pud - the old man (Pit x Lab)