Kammala wannan jumla: A waje da gwamnati a lokacin da ake kira "shekaru na daji" a cikin shekarun 1930, Churchill ya jagoranci kira ga sake sakewa na Birtaniya don magance barazanar da ake yi na soja a Nazi Jamus. Da barkewar Yaƙin Duniya na biyu an sake nada shi a matsayin Firayim Ministan Admiralty. A watan Mayu 1940, ya zama Firayim Minista, ya maye gurbin Neville Chamberlain. Churchill ya kula da shigar da Birtaniya a cikin yakin basasa na Allied da Axis, wanda ya haifar da
nasara a shekarar 1945. Bayan raunin Conservatives a babban zaben 1945, ya zama Shugaban 'Yan adawa. A tsakiyar yakin Cold War da ke tasowa tare da Tarayyar Soviet, ya yi gargadin jama'a game da "labule na baƙin ƙarfe" na tasirin Soviet a Turai kuma ya inganta haɗin kan Turai. Ya rasa zaben 1950, amma ya dawo ofis a shekara mai zuwa a zaben 1951. Wa'adinsa na biyu ya damu da harkokin waje, musamman dangantakar Anglo-American da kuma kiyaye Daular Burtaniya. A cikin gida, gwamnatinsa ta jaddada gina gidaje da kuma samar da makamin nukiliya. A cikin rashin lafiya, Churchill ya yi murabus a matsayin Firayim Minista a shekarar 1955, kodayake ya kasance dan majalisa har zuwa 1964. Bayan mutuwarsa a 1965, ya sami jana'izar jihar.