Complex sentence: The competing torpedo bomber entry from Blackburn was also ordered as the Blackburn Botha; in an unprecedented step, both designs were ordered straight off the drawing board, an indication of how urgently the RAF needed a new torpedo bomber.
Split into simpler sentences: The competing torpedo bomber entry from Blackburn was also ordered as the Blackburn Botha. In an unprecedented step both designs were ordered straight off the drawing board, an indication of how urgently the RAF needed a new torpedo bomber.