Sean McLachlan is an experienced Canadian author who used to study and work in the USA and is a member of a number of US historical societies. His writing is detailed with rare documentary and picture archive materials. The author lives in Madrid, Spain.
American Civil War Guerrilla Tactics does provide a comprehensive introductory summary to the conduct of irregular warfare worthy of a prospective buyer's consideration, with some anecdotes and examples from both sides. Civil War Books and Authors (November 2009)