"Flash and sound ranging have now an established status in our military organizaiton. Besides serving the artillery both systems are able to supply valuable infomration to the Intelligence Sections of the General Staff in operations."
United States Air Corps Tactical School (Langley Field)
"The scope of this 1927 course in Antiaircraft Defense as taught at this school is to familiarize Air Corps commanders with the capabilities and limitations of the antiaircraft Service, and to assure coordination and cooperation between the Air...
"This 1944 manual prescribes the knowledge and skill required to serve effectively the multiple gun motor carriages M15 and M15A1. Variations in assigned materiel may necessitate changes in the prescribed drill."