"This memorandum prescribes the procedures and techniques for conduct of observed fire using the target-grid method. It covers observer procedure in detail. It covers fire-direction center and firing battery procedures only insofar as they differ from procedures set forth in FM 6-40, 1 June 1945. ... This memorandum is published for instructional use until the procedures and techniques are incorporated in appropriate Department of the Army training literature."--Page 1.

"1 November 1948"--Front cover. At head of title: Training memorandum. "Prepared and published at The Artillery School with the approval of the Chief, Army Field Forces."--Title page.

Part IGeneral -- Part II Observer procedure -- Introduction -- Terminology; determination of data -- Conduct of fire -- Part III Fire-direction center procedure -- Introduction -- Duties of personnel -- Construction and use of firing charts -- Fire missions -- Part IV Firing battery procedure.