My AH was an officer in an elite military unit (22 years served, now retired). I could have written your post. It is what happened in our house.
I cannot go into detail on this board (maybe PM if you want), but my husband is now in recovery. He picks up 3 years next month. Your dh is in a very bad place right now, if it is anything like what happened here (bottles hidden, time away from the house, strange behavior...). We (the spouses) usually only know/find the tip of the iceberg.
I would call about or go online and find an al-anon meeting. Also, read the stickies on this board. They are very helpful. There is much support here.
(yes, I am AA but also the other side, as I am married to one, too)