Growing up north of Toronto, R.H. Thomson's imagination was captured by romantic notions of war. He spent his days playing with toy soldiers on the carpet of his grandmother's house, recreating the Battle of Britain with model planes in his bedroom, or sitting at the local theatre watching World War II B movies--ones that offered a very clear perspective on who were the heroes and who the villains; which side were the victors and which the vanquished. Yet Thomson's childhood was also shaped by the spirits of real-life warriors in his family, their fates a brutal and more complicated reminder of the true human cost of war. In By the Ghost Light, R.H. Thomson offers an extraordinary look at his family's history while providing a powerful examination of how we understand war and its aftermath. Using his family letters as a starting point, Thomson roams through a century of folly, touching on areas of military history, art, literature, and science, to express the tragic human cost of war behind the order and calm of ceremonial parades, memorials, and monuments.