Kammala jumla mai zuwa: A watan Nuwambar 1943 an sanya Baker a matsayin kwamandan jirgin sama tare da Rundunar Sojoji ta 493, Rukunin Sojoji na 48, a Tullahoma, Tenn. A farkon 1944, ya tafi Turai Theater of Operations tare da kungiyar da aka sanya wa Ninth Air Force. Ya tashi P-47 Thunderbolt jirgin sama a cikin yakin Air Offensive, Turai; Normandy; da
Ƙasar Rhineland. An ba shi lambar yabo ta Azurfa don ƙarfin hali a cikin aikin kuma ya sami tarin ganyen itacen oak zuwa Gicciye mai tashi. A ƙarshen aikinsa na Turai na biyu, ya tashi a cikin sa'o'i 523 a cikin ayyukan yaƙi 272 a cikin jirgin saman Spitfire da Thunderbolt na Burtaniya.