"This 1942 manual is published for the information and guidance of personnel using the 20mm aircraft gun materiel M1 and M2 and contains technical information requried in the identification, use, and care of the materiel."
Small arms ammunition : personal equipments of the soldier (comprising infantry, cavalry, artillery, and band equipments : miscellaneous articles for the use of all organizations : 3-inch W.I. saluting gun, mount, equipment, ammunition, etc. and...
These 1942 lessons were prepared under the direction of the Commanding General, Field Artillery Replacement Training Center, Fort Sill and prescribed for use as an aid to training.
The following Syllabus of Examination for Gunners, published as an Appendix to General Orders, No. 141, War Department, August 27, 1904, is republished for the information and guidance of the Coast Artillery.