In 20-30 years the USA will be known as the "Drone Empire". Our ground troops, tanks, ships, planes, ships and submarines will be drone based and run from operation centers. Laugh if you want but I think a robot/machine/cyborg based empire as we saw in Terminator may be in play.
You are probably right. Unfortunately, drones and high-tech toys don't win wars. Boots on the ground with a determination to prevail are what win wars. That's why we haven't won a "conflict" since 1945.