Lots of technologies have been born from military research in the USA. The frequency hopping technique that military radios use is was made cell phone networks possible. Many advances have been made in trauma medicine. There are many more examples but the point is that the origin of the technology doesn't matter, just how people use it.
Discussion
War advances most fields as to support troops on the front it takes both infrastructure and resources. As both are crucial, you want the most efficient systems... the aim in warfare is to win at any cost... as History is decided by the winners. Legacy matters.