sentences:  The third category in the directly registered groups, the "mixed-nationality troops", were registered after discussions concerning such troops took place at the 3rd International Conference of 1924 at which the BSIB was authorized to directly register such groups.It seems that the discussion at the 1924 International Conference was, at least in part, prompted by a letter to Baden-Powell from the Scoutmaster of one such troop in Yokohama, Japan.Janning's troop became the first troop directly registered by the BSIB.