A 1965 US army training film on the basics of photography ...

MICHAEL ZHANG, PETAPIXEL:

"Here’s an interesting blast from the past: in 1965, the US Army released [a] 25-minute film ... to teach the basics of photography (for military police purposes).... In addition to introducing some general photography and camera principles, the film also covers the use of photography in military police work and criminal investigations."

Learn more, and watch the video, here.