considering the strategic direction of the Colombian National Army, the need to increase training effectiveness using technological developments in biomedical engineering is highlighted. This study evaluates brain electrical activity via complex networks in virtual reality situations which simulate military reactions. Results suggest that a high network degree may be related to an appropriate decision-making process, whereas a lower value may be associated with poor performances according to military doctrine. While not entirely significant, some difference is appreciated, mainly between the base period and the event related to subject elimination (p=0.058). The authors also noted the burst suppression pattern when the subject was eliminated. As this is a work in progress, more research subjects are being recruited and more complex networks descriptors are being explored.