Was anyone killed in the Battle of Cowshed? If yes, who? Also, Who won the Battle of Cowshed and how did they win?

Mr. Jones kills one sheep and wounds Snowball several times with his gun, but the animals manage to overpower the humans. Boxer is thought to have killed a stable-lad, which upsets the stalwart horse. But it turns out that the boy is only injured, and he flees with the other men. The animals win the Battle of the Cowshed by using strategies implemented by Snowball.