The medals that the grandfather wears on his coat for large parts of the movie are the general medal for voluntary military service and the Verdun campaign medal. He mentions that he fought at the Battle of Verdun (1916), the bloodiest battle of the First World War in which more than half a million French soldiers died, as well as 400,000 Germans.
Waiting for Anya, is a film adaptation of the book by War Horse author Michael Morpurgo. The book was first published in Great Britain in 1990.