The development of appropriate helicopters favored the introduction of this concept; other armies, among them the French Army during the Algerian War, quickly adopted it. However, the American Army was its main user. During the Vietnam War, because of the guerrilla tactics of the Vietcong and the great flexibility of the army of North Vietnam, Americans felt the need to use helicopters to move entire divisions to combat zones. These divisions needed to be lightweight and flexible and have great mobility, a combination resulting in lethal firepower. It was during this conflict that Americans created the 1st Cavalry Division; Airmobile in July 1965 (Hall, 2007). .
After the difficulties encountered during the air war in Vietnam, the leaders of the Air Force of the United States decided to seek creative ways to improved aircrew training. They characterized these innovations in instruction as initial qualification training for missions and rigorous, standardized ongoing training, including training for very different air combat, aggressor squadron training, and the creation of Bandera Roja (Red Flag). This tactical basis has allowed the Air Force to remain in good standing, as demonstrated by the effectiveness of combat during the Gulf War and the Balkans. However, the Air Force must now expand that base to cope with the rapid operational information and technology (Karnow, 1983). .
Today, the partnership of helicopters and light infantry is widely used. America used airborne troops in conflicts like Grenada, Panama, the Persian Gulf, Somalia, Bosnia, and Afghanistan. In today's world, after the Cold War, small but violent conflicts can arise almost anywhere, and for rapid intervention forces, the helicopters are an important factor. In this context, the speed with which airborne forces must move requires the use of air assets, and therefore the most modern militaries maintain large formations in condition for immediate use.