Did the windmill the animals were building in Animal Farm represent anything in particular? Collectivization of agriculture? Industrialization? Making the New Soviet Man and Woman?
It is an oblique reference to Miguel de Cervantes whose two original windmill tossers, Don Coyote and Sancho Panda were left out of the book.
>> Don Coyote and Sancho Panda
You crack me up 
Some say it represents the USSR’s first five-year plan (1928).
Some say it represents the Revolutionary Spirit.
I say it represents the asinine notion that everything in every novel has to represent something.
I’ve always assumed that the two attacks on the windmill represented World War I and II, and the windmill itself the economy and industrial infrastructure.
Also, four legs are good, but two legs are better. (Wings counting as legs).