Microsoft won a nearly $22 billion contract to supply U.S. Army combat troops with its augmented reality headsets. Microsoft and the Army separately announced the deal Wednesday. The technology is based on Microsoft’s HoloLens headsets, which were originally intended for the video game and entertainment industries. Pentagon officials have described the futuristic technology — which the Army calls its Integrated Visual Augmentation System — as a way of boosting soldiers’ awareness of their surroundings and their ability to spot targets and dangers. Microsoft’s head-mounted HoloLens displays let people see virtual imagery superimposed over the physical world in front of them — anything from holograms in virtual game worlds to repair instructions floating over a broken gadget. Users can control what they see using hand gestures or voice commands. The Army’s website says soldiers tested the gadgets last year at Fort Pickett in Virginia. It …