What treatment would World War 2 soldiers receive if they had post traumatic stress disorder?

Post-Traumatic Stress Disorder, commonly known as PTSD, was not recognised or diagnosed back during World War 2. There was limited understanding of psychological health and emotional impact following a war that claimed millions of lives, leaving many soldiers psychologically impacted and lacking in much-needed psychological treatment. During that time, soldiers with such symptoms typically faced difficulties, were sometimes misunderstood, and frequently sought support through self-medication, peer support, alcohol, or spiritual resources as coping mechanisms.

Since PTSD wasn't widely known at the time of World War 2, formal treatments specifically focused on the condition had not been developed then. It only started taking the spotlight and being given adequate diagnostic importance from around the 1980s after a considerable change in cultural perceptions of psychological trauma.