As the boat reached the ship and they hoisted him up he took one last look at Gallipoli and knew part of him would remain there too, lying with the dead, until the soil found their collective dust and the breeze whispered their spirits across the cove.
Jack knew he had changed in that place- that the breeze would carry with it the man he used to be, who they all were on the other side of time before living including killing. Every man who landed there would leave the ghost of his former self behind.