The card campaign includes those working and receiving care at Walter Reed Army Medical Center here.

A special P.O. Box address will be published the first week of November online at http://www.redcross.org/holidaymail.

In the meantime, people shouldn't send cards to Walter Reed unless they are addressed to a specific wounded warrior.

Due to security restrictions, Walter Reed cannot accept generic mail addressed to "A Recovering Soldier" or "Any Soldier." In past years, hundreds of cards were returned to senders because of generic addresses, many sent in response to misleading e-mails.

The American Red Cross and Pitney Bowes Inc. will partner for the third year to provide screening of all mail sent to the special P.O. Box address. Cards postmarked no later than Dec. 7 will reach servicemembers recovering at Walter Reed.