This manual supersedes FM 21-30, August 1, 1939, and Training Circular No. 48, War Department, 1941. SECTION I GENERAL • 1. PURPOSE.—This manual is intended to supply the in formation required by the map reader. Persons engaged in the preparation of maps should be guided by AB 300-15, TM 5-230, and by Bulletin 788, Topographical Instructions of the United States Geological Survey. • 2. SCOPE.—This manual shows in convenient form the abbreviations and general symbols which have been author ized for military use. The general topographical symbols in section II, the symbols intended for air navigation maps only in section III, and the general abbreviations in section V have been approved by the Federal Board of Maps and Surveys and are prescribed for use on all United States maps.
DesignationFM 21-30
EditionJan 1941
StatusSuperseded
Pages70
FunctionFieldcraft Survival
CollectionHistoric
Public domain (U.S. Government work)