Actually, the Internet was developed under a DARPA program (originally called ARPANet). The WWW was from a European consortium of scientists.
As for the militia, that's very quaint.
The founding fathers also didn't know about high-yield explosives, jets, tanks, precision guided munitions, etc. The didn't know about petroleum- and nuclear-driven commerce and energy. Times have changed, and we need to change and adapt with them.
The truth is that, as shown in Iraq and elsewhere, the fighting just bogs down whether you're the "militia" or the occupying army. Both can make each other's lives miserable, and there certainly doesn't seem to be a happy outcome any time in the foreseeable future for anyone involved.
My problem is that huge amounts of our taxes are being spent on quagmires like that, rather than on truly defending ourselves and improving our decaying infrastructure and educational system at home. Those are far better investments for our tax dollars.