2014 marked the centenary of the beginning of World War I. This year, in many parts of the world, commemorative events will be held, marking the 100th anniversary of the start of what was referred to at the time as the Great War. In the history of psychiatry, the First World War is often identified with the first time in history that military Post-Traumatic Stress Disorder was officially recognized, then known as “shellshock.” [1] “Shellshock” would undergo a long metamorphosis to emerge in 1980 as “PTSD”. The VA process for service connection for PTSD has travelled a long and often uncertain road. Let’s take a look at how you should present your case to the VA. Part I Part II Part III