Great idea. We do the exact same thing.
Operation BBQ For Our Troops is a non-profit that has branches all over the US. I don't know all of the red tape you have to jump through to be able to do it, but it seems our head guy had to get clearance all the way to the DOD.
Up in your neck of the woods a fellow Brethren member is part of Operation BBQ. Contact "
Muzzlebrake" here on the forum to ask questions in detail.
Good luck, and thanks for supporting our troops.