GUARDIAN's style guide cautions writers about the "National Association of Schoolmasters Union of Women Teachers". The caution is that the word "and" is not part of that title. There will be a temptation to insert it after "Schoolmasters" because this sounds like a merger of two originally distinct groups, sort of like the Presidents' Day of educational unions. The guide also suggests not using NASUWT. Call it by the whole long name on first mention, then say "the union" rather than using those "unlovely initials". This inspired a little research. NASUWT came into existence because of a secession in the first instance, and later a merger. In the UK, a fair number of men put aside their schoolteaching jobs to go fight the Great War in 1914. When the survivors came back, and sought a return to their civilian career, they found that women were dominating their field. They were unhappy about this. The men seceded from the N...