It's a pretty common track worldwide; most air forces use army ranks instead of (say) naval ranks or totally made-up ones. At least in the officer ranks; in enlisted ranks, they usually seem to use some variant of "airman" (or, well, the USAF and RAF seem to, at least), but that's not what's important. What I'm trying to understand is why that happened. Was it dominance by army personnel during the early days of air force creation (obviously, in the US case)? If so, why?
This is less a strictly AH question than an H question, but it relates to an (ASB) AH project I'm working on in my spare time.