Support the move of this material to Pioneer (military). My copy of The New Oxford Dictionary of English does not support the idea the term is much more used to refer to a type of infantry than to any other meaning, and I'm afraid I'm gullible enough to think that the writers of that tome may know one or two things about modern English usage. I don't think we necessarily need to have primary topic, and that we should move Pioneer (disambiguation) to Pioneer, but I'm open to persuasion on that score. ''''''