FM 21-30: Conventional Signs, Military Symbols, and Abbreviations
Field manual 21-30 is intended to supply the information required by the map reader.
History
- 1968-09-16: Change No. 2
- 1965-06-30: Military Symbols [pdf]
- 1961-05-05:
- xxxx
- 1945-02-28: Change No. 3
- 1945-02-15: Change No. 2
- 1944-04-21: Change No. 1
- 1943-10-15: [pdf]
- 1942-07-27: Change No. 2
- 1942-05-09: Change No. 1
- 1941-11-26: This revision [pdf] supersedes Training Circular No. 48, 1941, too.
- 1939-08-01: