I agree wholeheartedly with Copobo. While there are a lot of people in the military who do smoke, if you don't have the self control to not smoke prior to joining the military, this is probably not a good decision. As Copobo said, tell your recruiter up front. Don't fail and ruin his rep and yours. When you pop positive, it will be a federal offense at that time.
Dennis from Montana, 17 years Navy.