Except... maybe... we Germans do it like your CIA did: we simply assume that the names are "Miller, Warren", "Miller, Christopher", "Miller, Justin", "Miller, Sarah", "Miller, Catherine", etc. then we kidnap all those who have these names and are right now in Germany (I bet there are lots of them among the 75,000 GI´s), torture them and keep them in our Helgoland Island detention camp for months until we set them free, tell them that it was a simple spelling error, and claim it never happened. Hah!
The German intelligence doesn't have the muscle to do that. The regular U.S. Army would be all over you like ugly on an ape, the CIA wouldn't have to lift a finger...