Japan's right-wing nationalists have launched three major attacks on school textbooks over the second half of the twentieth century. Centered on the treatment of colonialism and war, the attacks surfaced in 1955, the late 1970s, and the mid-1990s. This article examines three moments in light of Japanese domestic as well as regional and global political contexts to gain insight into the persistent problem of the Pacific War in historical memory and its refraction in textbook treatments. There are striking similarities as well as critical di erences in the ways the attacks on textbooks recurred and in the conditions of political instability.