In an effort to be fair to the gaming world and not be seen as too narrow minded. Yes 28mm is king and for ever shall be! But there are other scales available for people to use. And admitedly one of the more popular is 20mm or 1/72nd as some refer to it.
And, if you are a fan of this smaller scale, and like your historical gaming, then if you have not already discovered the following blog, you might wish to take a moment to have a read.
Will have probably been gaming longer than I have been on this mortal coil, and when he is not gloating over crushing victories happens to be a reasonable chap and a fellow club mate.
His collection of 20mm plastic is mind boggling. By some estimates its over 10,000 and probabaly a lot more. He certainly is a busy bloke at times.