Final answer:
In chapter 4 of Animal Farm, Jones accidentally leaves behind his weapon during the Battle of the Cowshed.
Step-by-step explanation:
In Chapter 4 of the book, Animal Farm, by George Orwell, Jones accidentally leaves behind his weapon during the Battle of the Cowshed. The battle takes place between the animals on the farm and the humans who try to retake control. Jones' weapon is symbolically significant as it represents the loss of power and control by the humans.