The hidden trauma of WW1

By the end of World War One, hundreds of thousands of servicemen were displaying symptoms with no obvious physical cause, including violent shaking, muteness and night terrors.

Using archive footage and interviews with combat veterans, this documentary delves into the story of one of the 20th century’s greatest mental health challenges, shell shock – also known as battle fatigue, combat stress and, more recently, PTSD – and asks why we are still unable to deal effectively with the trauma of war.