The interwar decades saw a bitter recruiting war between the NUT (National Union of Teachers), the National Union of Women Teachers (NUWT), and the National Association of Schoolmasters (NAS), which like the NUWT broke away from the NUT in the early 1920s. The NAS opposed the NUT's official policy shift to support equal pay for male and female teachers, even though as NUWT members complained, the NUT leadership only half-heartedly pursued the policy. Both of the smaller unions were convinced the NUT served the interest of the opposite sex. NUWT members protested that male-dominated power structure of the NUT served the interests of men, despite women being the majority of its members. The NAS told male teachers that only a "Man's Association" could protect their interests, and constantly railed against the supposed power of women in the NUT. "The influence of the NUT is sinister to men teachers when used for the promotion of that extreme feminism which is adverse to the legitimate interests of men, and men must meet it and destroy it, or be destroyed" (NAS, No.1a). While the National Association of Schoolmasters were never close to a majority of male teachers, they had a disproportionate influence for their size. In 1928, the NAS already represented 13% of male teachers and in a few localities, including Liverpool and London; it commanded the loyalties of 50 to 90 percent of schoolmasters (NAS, No.1a). This article focuses on NAS efforts to counter the effects of what they termed "extreme feminism".