Context: After having declined in size following the subjugation of the Mediterranean, the Roman navy underwent short-term upgrading and revitalisation in the late Republic to meet several new demands. Under Caesar, an invasion fleet was assembled in the English Channel to allow the invasion of Britannia; under Pompey, a large fleet was raised in the Mediterranean Sea to clear the sea of Cilician pirates. During the civil war that followed, as many as a thousand ships were either constructed or pressed into service from Greek cities.

Question: In which sea was a large amount of naval vessels sent in order to remove Cilician pirates?
Answer: Mediterranean Sea

Question: Around how many ships were sent into service from Greek cities?
Answer: as many as a thousand ships

Question: Who was ultimately responsible for the naval ships that were sent to the English Channel?
Answer: Caesar

Question: What was the driving force behind the revitalization of the Roman naval forces?
Answer: to meet several new demands

Question: What aspect of the Roman military saw a decline in size after the subjugation of the Mediterranean?
Answer: Roman navy