Conversation so far:
What role did Keynes play in the Second World War?
During the Second World War, Keynes argued in How to Pay for the War, that the war effort should be largely financed by higher taxation and especially by compulsory saving
What position did John Maynard Keynes hold?
In September 1941 Keynes was proposed to fill a vacancy in the Court of Directors of the Bank of England, and subsequently carried out a full term from April.

Question: Was he instrumental in helping the government pay for the Second World War?
Self-contained rewrite: Was John Maynard Keynes instrumental in helping the British government pay for the Second World War?