Describe his miraculous revelation?

After killing the German snipers, Dunstan is afraid he will be found in the nest, wanders back into the mayhem, and is struck in the leg by enemy shrapnel. He crawls to the shambles of a destroyed church, slowly bleeding to death. He sees flares in the sky, and worries one might come down on him. As he recalls Mrs. Dempster's parting advice - not to be afraid - he looks up to see a statue of the Virgin Mary, and recognizes Mrs. Dempster's face on the figure. He immediately identifies the moment as a miracle before losing consciousness. (We later learn he was struck by the flare after all.)