Map Reading And Land Navigation Manual FM 21-26
"The purpose of this field manual is to provide a standardized source document for Armywide reference on map reading and land navigation. It applies to every soldier in the Army regardless of service branch, MOS, or rank. This manual contains both doctrine and training guidance on these subjects. Part One addresses map reading and Part Two, land navigation. The appendixes include a list of exportable training materials, a matrix of land navigation tasks, an introduction to orienteering, and a discussion of several devices that can assist the soldier in land navigation.