The card above shows wounded soldiers, all of them amputees, recovering at the Pavilion Hospital, Brighton. It was sent to 32859 Pte William Henry Newsam of the 29th Field Ambulance, Royal Army Medical Corps, himself a recent amputee, in November 1917 while he was recovering at the Norfolk War Hospital in Thorpe.
The message on the reverse reads:
You will occupy one of these in due course but I may tell you they glory in operations. You are sure to lose another inch.
The signatory is unclear, possibly A J Butty, or Buttle/s (see below). I expect his words really cheered William Newsam up.
I acquired this card recently, along with W H Newsam's campaign medals, silver war badge and a lot of other very interesting material, and you can read more about him HERE.