Over a hundred thousand US servicemen were stationed in post–World War II China, resulting in the largest grassroots interactions in Sino-US history. Reexamining this unprecedented encounter in the context of American global military empire, this article investigates the sociocultural tensions caused by GIs’ sexual relations with Chinese women between 1945 and 1949. While conservatives maligned “Jeep girls” out of racial and sexual anxieties, liberals and self-identified Jeep girls invoked the language of modernity and patriotism. However, in the wake of the Peking Rape incident in 1946, the once diverse debate quickly ended as nationwide protests raged against American imperialism. In contrast with previous studies highlighting how Communist propaganda led to new anti-American sentiments, this research, by uncovering the complexities of Chinese women's experiences and their stories—which have been muffled or filtered through patriarchal agendas—foregrounds the key role of gendered nationalism in Sino-US relations.