Often you see a set of rules mentioned in blog post, like here at 'Blunders on the Danube' or on a youtube channel 'Little Wars TV', but you never quite get around to getting a copy. 'Snappy Nappy' has been up to now one, of those rule sets. If you want large games? Across multiple tables, with possibly a multitude of players? Then this is the rule set that might suit you.
My copy recently turned up in the mail, It will be interesting to see how it compares to other 'large scale' Napoleonic rule sets I have on my book shelf.