Conduct of field artillery fire using air observation. (open access)

Conduct of field artillery fire using air observation.

"This manual covers the methods and procedure for the control of field artillery fire using air observation."
Date: March 21, 1942
Creator: United States. War Department.
System: The UNT Digital Library
Radiotelephone procedure (open access)

Radiotelephone procedure

"The purpose of this manual is to acquaint radio operators and pilots of the Army Air Forces with radiotelephone procedure"
Date: March 20, 1943
Creator: United States. War Department.
System: The UNT Digital Library