Reasons for the Royalist defeat Conquering include Cause_to_be_included shortage of ammunition , the relative lack of professionalism of their soldiers and the tactics of Essex , who compensated Supply `` for his much lamented paucity of cavalry by tactical ingenuity and firepower '' , countering Attack Rupert 's cavalry by driving Motion them off with mass infantry Hostile_encounter formations .

Jay-Z and the tour promoter then banned Preventing_or_letting R. Kelly from the tour claiming `` lack of professionalism '' .