Winston Churchill was the prime minister of Britain from 1940 to 1945 and from 1951 to 1955. He is most famous for his leadership during World War II, when he rallied the victorious Allied forces. Prior to his service as prime minister, he served as a soldier, a member of Parliament, president of the Board of Trade, minister of War and Air and colonial secretary.
After the beginning of World War II, Churchill campaigned for Britain to re-arm and protect itself from the German Nazi troops that invaded its neighbors. He was serving as chairman of the Military Coordinating Committee before being elected as prime minister, replacing Neville Chamberlain. Churchill allied with Russian leader Josef Stalin and President Woodrow Wilson of the United States to fight the Axis Powers of Germany, Italy and Japan.
After Britain's shared victory in World War II, Churchill was briefly replaced as prime minister while he campaigned in the United States against his former ally, the Soviet Union. It was during this time that he gave his famous "Iron Curtain" speech, warning of socialism and its impact on Europe. He was knighted by Queen Elizabeth II in 1953.
Winston Churchill died at the age of 90 in January 1965 after suffering a severe stroke.