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Lesson 10 min 20 XP

After-Action Review

Learning from crisis — how to conduct effective post-crisis reviews that improve future response without assigning blame.

The After-Action Review

The After-Action Review (AAR) is a structured process for learning from crises. Developed by the US Army in the 1970s, it has been adopted across military, government, and corporate settings.

An AAR answers four questions:

  1. What was supposed to happen? Establish the plan and objectives before the crisis hit.
  2. What actually happened? Build a factual timeline without judgment. What did we do, when, and in what order?
  3. Why was there a difference? Analyze the gap between plan and reality. What worked? What didn't? Why?
  4. What will we do differently? Specific, actionable changes — not vague commitments to 'do better.'

The critical rule: no blame. An AAR focused on blame teaches people to hide mistakes. An AAR focused on learning teaches people to surface problems early. The US Army phrase is 'a professional discussion, not a critique.'

After-Action Review | Model Diplomat