Statistics suggest that until relatively recently the majority of soldiers in combat never fired their weapons. For most of us it is next to impossible to open fire on someone, so the military goes through great efforts to teach soldiers to become killers and to desensitize them. The products of these efforts are trigger-happy soldiers who at times report that they find it difficult to switch off this aggressive, vigilant mentality when they return home. This combined with PTSD and BTI is the recipe for disaster. Battle at Home investigates some of the cases of civilian killings for sport, acts of torture, opening fire on fellow servicemen and murder of friends and families at the hands of soldiers either during their deployments or back at home.