The Christian regiment was selected because there was a tradition known to the religious leaders that when the expected Qa’im appears, He would be killed by Muslims. Therefore, they purposely avoided using a Muslim regiment.
However, with some 10,000 spectators watching the execution, including diplomats and dignitaries of several countries witnessing, once the smoke of the first volley cleared, those in charge were eager to dissuade the crowd that there had been no “miracle”, showing them the ropes which had been shot.
However one wishes to take this, as miraculous or coincidence, it is recorded that when the Bab was taken off to be suspended up the wall of the Barracks Square of Tabriz, He said: “There is no power on earth which can prevent Me from finishing what I have yet to say.”
The leader of the first regiment refused to have anything to do with any further attempt to execute the Bab. Having no alternative, the Muslim clergy then summoned a Muslim regiment to fulfill the order to execute the Bab, thus fulfilling the prophecy that the Qa’im was in fact killed by Muslims.