How did the Greeks get Helen of Troy back?

The Greeks retrieved Helen of Troy through the use of the cunning strategy of the Trojan Horse. After a prolonged siege of Troy lasting ten years, the Greeks constructed a large wooden horse and hid soldiers inside it. They left the horse at the gates of Troy as a supposed offering to the gods and pretended to retreat. The Troyans brought the horse into the city, and at night, the Greek soldiers emerged, opened the gates for the rest of the Greek army, leading to the fall of Troy and the recovery of Helen.