However, this bit I disagree with:
But then the whole of IT has its roots in military requirements, just as aviation does.
Aviation, as far as I'm aware, was very much a product of civilian trial and error, and individual entrepreneurship, whether you're talking about early lighter-than-air craft, through heavier-than-air craft to powered flight. I cannot think how you can justify saying that it has it's roots in military requirements.
However, there is no disputing that military requirements lead to a very rapid development of powered flight once the principal was accepted.