Christian resistance does not inevitably have to form along lines of denominational convictions.
Thus, Protestants came to resist German Christians in certain situations, utterly regardless of their denominational membership. The Young Reformation movement ought to be counted among them. Even the National Synods of the Confessing Church and the Confessing Church themselves had an interdenominational Protestant character.
Since the two official churches were primarily intent on keeping their own churches from the clutches of the Nazi state, Church resistance tended to form within the particular churches.
Denominational orientation did not however play any role in political resistance groups such as the Kreisau Circle.