Hi Frank, I don't think they had objector status classes, during the Civil War, as we did during Vietnam... but many Quakers were well off and could pay their way out of the draft. However, many joined the Union Army, and many of those were read out of meeting for so doing, while many others were forgiven by their meetings, and returned to the peace testimony after the war.
Our work with the Underground Railroad made that war difficult for many Quakers ... unlike most of the other American wars, though objection in the face of most wars is difficult for most Friends. In our meeting, for several months after 9\11, one member of our meeting, who had been a Vietnam era CO, had a great deal of conflict of faith, until he realized he was being called to be the Quaker at home he expected others to be, in their nations at war, and he found himself centered in peace again.