Complex sentence: The fleet nearing Cape St Vincent would split into two sections as ordered by Raleigh, one under John Burrough was to head to the Azores to lay in wait for Spanish and Portuguese ships.
Split into simpler sentences: The fleet nearing Cape St Vincent would split into two sections as ordered by Raleigh. One, under John Burrough, was to head to the Azores to lay in wait for Spanish and Portuguese ships.