15th Field Artillery Brigade Headquarters Corps Artillery
This is a special staff committee report, containing an introduction to Corps artillery and its historical background, the artillery's increasing role in the global war, trained artillery commander's and staffs in the present Corps organization,...
"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."