After serving in Rwanda during the 1994 genocide and civil war, Lieutenant Colonel Stephane Grenier returned to Canada haunted by his experiences. Facing post-traumatic stress disorder and an archaic establishment, he spent ten years confronting -- and changing -- the military mental health system from within. Coining the term "Operational Stress Injury" to allow the military to see mental injury in the same light as a physical wound, Grenier founded the Operational Stress Injury Social Support program that provides help for mentally injured soldiers and veterans. Since retiring from the military in 2012, his groundbreaking approach has been adopted by civilian society. Through his social enterprise Mental Health Innovations, Grenier delivers his direct "walk the talk" method to improve mental well being in government and business.

Canadian soldiers returning home have always been changed by war and peacekeeping, frequently in harmful but unseen ways. The Invisible Injured explores the Canadian military's continuous battle with psychological trauma from 1914 to 2014 to show that while public understanding and sympathy toward affected soldiers has increased, myths and stigmas have remained constant. Whether afflicted with shell shock, battle exhaustion, or post-traumatic stress disorder, Canadian troops were at the mercy of a military culture that promoted stoic and manly behavior while shunning weakness and vulnerability. Those who admitted to mental difficulties were often ostracized, released from the military, and denied a pension. Through interviews with veterans and close examination of accounts and records on the First World War, the Second World War, and post-Cold War peacekeeping missions, Adam Montgomery outlines the intimate links between the military, psychiatrists, politicians, and the Canadian public. He demonstrates that Canadians' views of trauma developed alongside the nation's changing role on the international stage - from warrior nation to peacekeeper. While Canadians took pride in their military's accomplishments around the globe, soldiers who came back haunted by their experiences were often ignored. Utilizing a wide range of historical sources and a frank approach, The Invisible Injured is the first book-length history of trauma in the Canadian military over the past century. It is a timely and provocative study that points to past mistakes and outlines new ideas of courage and determination.