 About 80% of the 21,000 decided to abandon their objection and take up arms, but 3,989 drafted objectors refused to serve.Most belonged to historically pacifist denominations, especially Quakers, Mennonites, and Moravian Brethren, as well as a few Seventh-day Adventists and Jehovah's Witnesses.About 15% were religious objectors from non-pacifist churches.