"That is, Rutherford was pro-Hitler up until Hitler started jailing JWs in Germany because they were antiwar and would not conform to the Nazis."
Here is one point, then, where German JWs and Rutherford had different opinions. The German JWs were told from HQ to stop witnessing and stay calm, but many of them protested and could not understand why they should not oppose the devil Hitler. So they kept on publicly witnessing. After a while, they were told by HQ to witness again, and to distribute letters of protest, and this they did. So the attempts made by the US HQ to find some sort of co-operation or peaceful co-existence was not ratified by German JWs in general, who understood what Hitler was up to.
The Protestant church had its body of protesters as opposed to the Catholic church. In Austria, ONE single Catholic was executed for refusing to be enlisted in the army - and his cousin was a JW who was executed for his refusal. So the one and only Catholic refusing, was heavily influenced by JWs.
People could have protested and stopped Hitler at an early stage, and later too. One clear example of this, is the program for killing the mentally retarded, the eutanasie program. Trucks with mentally retarded people were driven thru towns and villages on their way to concentration camps, and the screaming of the young and old on the trucks led to people in the villages protesting, writing letters and even sit down in the street, thus preventing the trucks from passing thru. Priests led many of these protests. Result? The program was halted. If I recall correctly, for a couple of years. Then it was resumed, but from then on, the trucks passed thru the villages and towns in the middle of the night, with lights turned off, so as not to be noticed. If the Churches had protested, if the upper classes and the nobility had protested in stead of believing they could use Hitler to their own ends - he could have been stopped. Sadly, the socialist/communist/sosial-democratic parties chose mainly to fight each other and so there was no united front from the labor force either. A classic example of divide and reign.