Improvised explosive devices (IEDs) cause more than half of Coalition casualties. In 2009, the Institute for Creative Technologies (ICT) developed a research prototype for a mobile counter-IED training system. This system—the Experiential Counter-IED Immersive Training Environment (ExCITE)—was described at I/ITSEC 2010. Since that time, researchers at the ICT have developed several ways of assessing learning from ExCITE. One measure is a paper-based pretest/posttest. Another is a system that tracks trainees' responses to interactive training tools and their performance during a simulated vehicle patrol. This paper describes how these measures were created and refined. This paper also presents preliminary results from our empirical studies on the effectiveness of this counter-IED training.