Christmas post: Inside C-17 jet with post for troops
29 November 2012 Last updated at 09:23 GMT
Christmas gifts from loved ones can make all the difference for those serving abroad in the military.
But as the deadline for sending packages approaches, there's an appeal not to overload the British Forces postal system.
Well-intentioned mail from strangers can often delay important post.
John Maguire reports from RAF Brize Norton in Oxfordshire.