After any significant action, in training or in combat, soldiers and officers meet to discuss what happened. They take off their helmets—a symbolic action indicating that “there’s no rank in the room,” as Kolditz says. “Comments are blunt. If the boss made a bad decision, often it’s a subordinate who points that out.” The session isn’t about blaming; instead, it’s “a professional discussion,” as an army training circular puts it. Part of its strength is that it yields very complete feedback.