Kammala wannan jumla: Kamar yadda mahaifinsa ya yi adawa da shigar Amurka cikin Yaƙin Duniya na I, Phil La Follette ya yi adawa sosai, kamar yawancin sauran Amurkawa, shigar Amurka cikin Yaƙin Duniya na II. Da zarar an sanar da yaƙi, ya yi watsi da hamayyarsa kuma ya shiga rundunar sojojin Amirka, yana hidima a sandan Janar Douglas MacArthur. Daga baya zai jagoranci wani wakili na wakilai zuwa
1948 Jam'iyyar Republican National Convention ta goyi bayan takarar MacArthur don shugabancin.