Describe the Battle of the Windmill in order of events.

The battle of the windmill is over a pile of timber to build the windmill. Napoleon engages in complicated negotiations for the sale of it to either Mr. Frederick or Mr. Pilkington. When negotiations favor Mr. Frederick, the pigs teach the animals to hate Mr. Pilkington. When Mr. Pilkington then appears ready to buy the timber, the pigs teach the animals to hate Mr. Frederick with equal ferocity. Whichever farm is currently out of favor is said to be the hiding place of Snowball.