The best way to start is by contacting your local unit. They will know what troops from your area are deployed and have their addresses. Possbily even the local recruiter.
Hope this helps, April
pseuzanne wrote: My local Cardsmart store (50% off every card, all the time) had a basket of free cards by the register to send to military service people. I don’t personally know anyone serving in the military. Is there an address (preferably in the U.S.) that I can send the card, to have it forwarded to a serviceperson?