Viet Cong tunnels are shored with bamboo ... In the 1st Infantry Division, that job falls to a four-man team called “the Tunnel Rats.” Since January, the team has been crawling through ...

The Viet Cong dug elaborate tunnel complexes to use as safe bases, conducted hit-and-run attacks on Americans, and tried to avoid large-scale battles. The GIs usually moved slowly, calling in ...

B-52s have begun making tandem runs over Viet Cong tunnel areas, first with deep-penetration bombs that bore into the earth, then with a second wave of conventional bombs that destroy the surfaced ...