Before the Air Force Became a Separate Branch of the Military...
...all three of the services (Army, Navy, Marines) had their own, distinct air services...and unique ways of doing things tailored to their specific needs!
Now, this isn't to say they didn't share results of research between the branches, but there were aspects applicable only to each service.
This never-reprinted feature from Spotlight Publication's one-shot Ship Ahoy (1944) was likely checked by the government so that no critical/secret info was inadvertently published!