So the Catholic Church cannot claim to be the only missionary force?

The Catholic Answers

She claims to be the only divinely accredited missionary force, the only one which has a truly innate and perpetual expansive power, and the only one which has actually gone to all nations. In fact, there would be no other Christian missionary bodies were it not for her own missionary expeditions to the ancestors of those sects which later broke away from her despite Christ’s promise that He would never fail to protect her.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty