bruce...both 'people in uniform' and 'anti-war folks' are indeed classes, they are just not logically identical classes, since membership in the classes are based on different principles and definitions. It is easier to imagine if you create a class called "people wearing red hats"...some of whom may be murderers, but not by virute of their wearing red hats. To be the middle term in a syllogism, the terms should be identical. (Straining to wrap my head around this...it has been too many years since I was expected to get it right for a grade.)