WARFARE EVOLUTION BLOG: Helicopters will have a role in the kill web as they have in the kill chain dating back to their first uses in warfare. Starting with the Korean War, and later in Vietnam, the helicopter became the cavalry. Anyone serving in the Army during the 1960s and 1970s knows about the 1st Cavalry Division (Airmobile) in Vietnam. You could hear their UH-1 Iroquois helicopters (nickname: Huey) coming from miles away. These aircraft carried troops into battle and provided fire support for ground forces in a fight.