As well, they used their B-52 bombers to drop thousands of tons of bombs which included napalm and cluster bombs. In a particularly vile attack, they used poisonous chemicals on our base regions of Xuyen Moc, the Minh Dam and the Nui Thi Vai mountains. They sprayed their defoliants over jungle, and productive farmland alike. They even bull-dozed bare, both sides along the communication routes and more than a kilometre into the jungle adjacent to our base areas.