Members of the Wehrmacht were not allowed to be affiliated with a political party in any way in the early years. Naturally, as the war progressed things changed.
After the bomb plot, Wehrmacht personnel were allowed to have NSDAP membership. Before that, any political party memberships were suspended upon entering the Army.
After the bomb plot, Wehrmacht personnel were allowed to have NSDAP membership. Before that, any political party memberships were suspended upon entering the Army.