Quite a few of my college buds ended up in the military. One of them worked to maintain the computers while overseas in Kuwait and Iraq during our occupation in Iraq. He had all sorts of anecdotes about the crazy dumb things people would do. We're talking about the network security equivalent of putting a fork into a wall outlet or standing on a ladder as it rests on moving forklift or putting your exposed arm down a badger hole just to see if anyone's home.
At least in the Army, only since 2014 has there even existed a branch dealing with the entire "cyber" domain of war. One of my instructors was part of its creation and he was transferred from being a tank commander to designing the Cyber branch.