What happens at the battle of cowshed in Animal Farm?

In the Battle of Cowshed, the animals in Animal Farm fought Mr. Jones and his men. Mr. Jones was the farmer of Manor Farm, but since the animals won the Rebellion, it is now called Animal Farm and owned by animals. The pigeons alerted the animals that Jones and his men were going to attempt an invasion on the farm to get it back. Jones and his men broke the barred door holding sticks while Mr. Jones was holding a shotgun. The animals fought wisely and Snowball, the cleverest pig on the farm, led the attack. Snowball ran right up to Jones and attacked him. Jones tried to fire at Snowball, but the sheep behind Snowball was shot and killed. Jones fell to the floor and his gun shot right up and fell into the mud. Boxer ran right up to a boy and attacked him with his tremendous force. The boy fell face first into the mud. Jones and his men were retreating, and the animals had won. After this, they all saw Boxer trying to make the little boy in the mud move, but he did not stir. Boxer didn't intend to take a life, even if it was a human. He forgot he was wearing his iron hooves. Snowball told him to not be guilty because "the only good human is a dead one". Boxer broke into tears. They realized Mollie wasn't there because she was hiding behind her stall the whole time like she did during the Rebellion. When the animals went away, the boy in the mud stood up and walked away. He wasn't killed and was just stunned.