Complex sentence: This strategy failed and it was because of this defeat that Morgoth realised that Orc-captains and Orc armies were insufficient began to consider other more powerful leadership and auxilliaries Silmarillion, p.116, "Morgoth perceived now that Orcs unaided were no match...".
Split into simpler sentences: This strategy failed and it was because of this defeat that Morgoth realised that Orc-captains and Orc armies were insufficient. He began to consider other more powerful leadership and auxilliaries Silmarillion, p.116, "Morgoth perceived now that Orcs unaided were no match...".