Phrase 'shell shock' was once dismissed as cowardice, not a real wound.

When a wound left no mark

During the First World War, “shell shock” began as a name for symptoms thought to follow the blast of an exploding shell. But soldiers with shaking, speech problems, paralysis, memory loss, or emotional collapse did not necessarily have a visible injury. As doctors saw similar symptoms in men without evidence of a nearby explosion, the term came to cover a much wider range of breakdowns under combat stress.

That uncertainty mattered on the battlefield. A damaged limb could be examined; fear, confusion, or an inability to move could look like a choice. Some military authorities interpreted such behavior as cowardice or evasion, especially when units needed men to hold their positions. The same symptoms that might now prompt medical care could instead bring questioning, punishment, or a charge of desertion.

Why diagnosis became a command problem

Military medicine had to decide quickly whether a soldier was fit to return, needed treatment, or had disobeyed orders. There was no simple test that could distinguish psychological injury from deliberate refusal. Explanations also shifted: some doctors emphasized the physical effects of blasts, while others focused on the strain of combat. The label “shell shock” therefore did not guarantee that a man would be recognized as ill—or protected from discipline.

Some soldiers were executed for military offenses such as desertion. It is difficult to determine retrospectively which had what would now be recognized as a psychological injury, and an execution for desertion does not by itself establish a diagnosis. Still, the cases expose the cost of treating an invisible wound as misconduct: when suffering could not be seen, the institution’s judgment could decide whether it received care or punishment.