Moral injury occurs when you perpetrate, fail to prevent, or witness acts that violate your deepest moral beliefs. Unlike PTSD (a fear-based response to life threat), moral injury is a meaning-based response to moral violation. A soldier ordered to fire on civilians, a nurse forced to ration ventilators, a corporate whistleblower who stayed silent too long — all experience moral injury.

The distinction matters for treatment: PTSD responds to exposure therapy (safely revisiting the threat). Moral injury does not — because the problem isn't unprocessed fear, it's unprocessed guilt, shame, and the shattering of one's moral self-concept. You can't "expose" your way out of having done something you believe was wrong.

Military veterans were the first population studied, but moral injury extends far beyond combat. Healthcare workers during COVID faced impossible triage decisions. Social workers in underfunded systems watch children return to abusive homes. Teachers implementing policies they know harm students. Employees who stay in companies doing harm because they need the paycheck.

The common thread: being forced to participate in systems whose outcomes violate your values, with insufficient power to change those systems. This isn't weakness — it's the natural response of a moral being to moral violation.

Moral injury recovery requires what Jonathan Shay calls "communalization of grief" — sharing the moral weight with a community that can witness it without judgment. This is why veteran support groups, truth and reconciliation processes, and certain forms of group therapy are effective where individual exposure therapy isn't.

The goal isn't to forget or excuse what happened. It's to integrate the experience into a moral identity that includes the capacity for both harm and repair. Self-forgiveness (distinct from self-excuse) becomes possible when the injury is witnessed, acknowledged, and placed in context.