American forces used the following against the Vietcong:
D. napalm
A. Agent Orange
Both napalm and Agent Orange were chemical weapons used by American forces during the Vietnam War. Napalm is a flammable liquid that sticks to skin, causing severe burns, while Agent Orange was an herbicide used to destroy forest cover and crops. These were devastating weapons that had long-lasting effects on both the environment and human health in Vietnam.