The Prime Minister of Great Britain during World War II, Sir Winston Churchill rose to power after serving in different posts in liberal and conservative governments for more than three decades. The son of Lord Randolph Churchill and an American mother, Churchill remained Prime Minister and Minister of Defence until 1945, then returned to the position in 1951 until his resignation in 1954. In addition to being a world leader, Churchill was an established author, winning the Nobel Prize in Literature in 1953. His memoirs of WWII ran six large volumes alone and his speeches continue to b…