America's Army doesn't support controllers natively (or they didn't the last time I played). You'll have to use a software emulator to make the game think you are using a mouse and keyboard while you use the controller.
I have this controller and it should have come with a logitech disk that has software on it to achieve this.
You might want to check out
this site or
this site for other software solutions.
Device loaded via drivers but cannot get it to function on pc games?
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