Winston Churchill was the British Prime Minister during the Second World War. He served from 1940 to 1945 and was instrumental in leading Britain through its most challenging times during the conflict. Known for his steadfast leadership, rousing speeches, and unwavering determination, Churchill worked tirelessly to unite the nation and secure support from allied countries. His efforts were crucial in motivating the British people and maintaining morale during periods of adversity, such as the Blitz. Churchill's impact on the war and subsequent political landscape solidified his status as one of Britain's most revered leaders in history.