The night of the horse

The solider came down the stairs--two at a time.'Captain,they've gone,'he cried,'They've disappeared--all of them.The plain is...'But the captain of the guards was no longer listing.He was going up the stairs--three at a time.
Seconds later,the captain stood on the high wall of thecity of Troy.He looked down at the empty plain and,beyound it,at the empty sea.'They've goneand we've won,'he said.'Thegreeks have tried for ten years to capture our city.Now they've sailed away.And they've taken everying with them.'
'Not everying sir,'the soldier said,'They've left their horse,'Outside the main gates of the city stood a huge horse made of wood.
'Ah,yes,'the captain said.'That wooden horse,It's so big that they couldn't take it with them.'Well it's ours now.Get some help and pull it into city.That won't be diffcult.It's on wheels.'
'But why is it on wh