Instead of vast maneuver grounds and lots of instructors and equipment, soldiers can train with small but high-tech gear such as Dismounted Soldier Training System, or they can practice techniques, such as squad tactics or IED recognition, using a training game on a laptop or even smartphones.
The system, which can run over video cameras in the gun barrel or on the soldier's helmet, will notify users when someone who was present previously turns up at the soldiers current location, which should help them identify trouble makers.