Vanderhoven7 you are right that shunning does not show love. At the same time refusing to kill each other is very good. I can see both sides, and don't feel the need to use a bad to negate a good or vice vera. Each is what it is.
There was a handful of people from other groups who also refused to fight in Nazi Germnay: a few Adventists, Baptists and other pacifists from other groups. These were small in number and generally categorised along with JWs in the camp system.