How did Gulliver help the Emperor of Lilliput against Blefescu

Gulliver becomes a great friend of the Emperor of Lilliput, who introduces Gulliver to many of their customs. For example, instead of staffing his cabinet with capable administrators, the Emperor chooses guys who perform best at a dangerous kind of rope dancing. The Emperor asks Gulliver to help him in his war against Blefuscu, a similarly tiny kingdom across a channel of water. Gulliver agrees and uses his huge size to capture all of Blefuscu's navy.