Project Retrospect, a story from Tom Young. After action review. An after action review (AAR) is a structured review or de-brief process for analyzing what happened, why it happened, and how it can be done better by the participants and those responsible for the project or event.
After-action reviews in the formal sense were originally developed by the U.S. Army although less structured de-briefs after events have existed since time immemorial. Conducting Effective After Action Reviews (AAR) - Part 1. Project Retrospect, a story from Tom Young.