Go man, go. Thanks for your service.
I know that most service people are humble, but, this would be my suggestion for your script after you knock on doors asking permission to hunt:
"Sir, or M'aam,
I am home on leave and would like to know if I could hunt your property, or if you might have a suggestion of where I might go?"
You would score, and deservedly so, every time.
Good Luck
Walt MI/USA