This book provides detailed information about how US Army units were organised and operated in America's longest war. Vietnam Special Forces veteran Gordon L Rottman examines the different types of infantry battalions and the units that supported them, their training and organisation down to platoon level. Aspects of the US Army's conventional and unconventional warfare doctrine are also addressed, along with a discussion of how replacements were trained and integrated into units. Among other areas of the US Army's involvement covered are individual and crew-served weapons, artillery, armoured fighting vehicles, transport, logistics, the complex chain of command, and combat operations.

Gordon L. Rottman entered the US Army in 1967, volunteered for Special Forces and completed training as a weapons specialist. He served in the 5th Special Forces Group in Vietnam in 1969-70 and subsequently in airborne infantry, long-range patrol and intelligence assignments before retiring after 26 years. He was a Special Operations Forces scenario writer at the Joint Readiness Training Center for 12 years and is now a freelance writer, living in Texas.