Viet Cong and NVA Tunnels and Fortifications of the Vietnam War

During the Vietnam War, the Viet Cong (VC) main forces and North Vietnamese Army (NVA) were forced to hide weapons and supplies underground and to dig protective shelters to counter massive US firepower.

Their field works defended villages, hidden base camps, and fortified complexes, and took the form of trench systems, individual fighting positions, crew-served weapon positions, bunkers, caches, a...