You said:
Well actually I have a friend who I used to fly with and now he is a UAV pilot and I actually stood behind him and watched him shoot down a drone from his UAV using TV guided weapons.
That is not the same thing at all. You just don't get it. First off, the system he used would have had a high resolution digitally enhanced imaging system with gyro stabalization - not available in 1945 Germany. Secondly, it would have had a proximity fuse to detonate the weapon when it to the minimum distance from the target. Third, it would probably have had a more effective charge than the German SAM's of WWII. Fourth, the target was probably not flying at 250 mph nor conducting any kind of evasives or counter measures.
Unless you are specific about exactly what it was you saw your personal observation is meaningless. Most likely, you saw something but did not really understand what it was you were seeing.
Yes this is a "what if" thread, but that does not mean I cannot dispute unreasonable assertions.