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FM 21-30 Conventional Signs, Military Symbols and Abbreviations 1941

FM 21-30 Conventional Signs, Military Symbols and Abbreviations 1941-11-26 "This manual shows in convenient form the abbreviations and general symbols which have been authorized 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. Symbols of a purely military nature prescribed by the War Department are given in section IV and special abbreviations authorized for military use, in section VI. Symbols other than those herein authorized may be used, provided they do not conflict with any authorized symbols and are explained in a suitable legend on the map." Digitized by AHEC (U.S. Army Heritage Collections) http://www.carlisle.army.mil/ahec/ · "War Department"--Cover · Includes index · This manual shows in convenient form the abbreviations and general symbols which have been authorized for military use. It is intended to supply the information required by the map reader. ... supersedes FM 21-30, Aug. 1, 1939 ..

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