My personal impression is that Quakers, like all abolitionists, enthusiastically took part in the mental preparation of the Civil War. But when the War came they were perplexed and most of them opted out of it. But this abrupt change of  view couldn't work well, indeed a third of the young men joined Lincoln's army. On the other hand, Quakers were rigorous enough to disown those young men and thus lost a lot of their followers.

Is this historically correct?

What would it mean…