00:00The things that troubled the U.S. military the most during the Vietnam War were booby traps and tunnels.
00:03Especially, these tunnels had an incredible effect.
00:04The Viet Cong's tunnel tactics were a powerful counter to overwhelming firepower and advanced technology.
00:08They neutralized the superiority of the U.S. military and were the key to an asymmetric advantage.
00:12By building massive fortresses underground, they avoided the U.S. military's carpet bombing
00:15and enabled stealthy ambushes and supply routes.
00:17They turned the Vietnam War into a deep quagmire for the United States.
00:20There were even hospitals and restaurants inside the tunnels.
00:22They even built weapons factories inside and placed booby traps everywhere,
00:25so if you weren't careful, you could get caught in a trap lined with punji stakes.
00:28The U.S. military suffered heavy casualties because of this.
00:30It also had a significant psychological effect, making things very difficult for the U.S. soldiers.
