How does the incident of Rab and the muket make clear the attitude of the British soldiers?

Rab becomes fascinated with the British officers’ muskets. He dreams of having one for himself. One day, Rab accidentally touches an extra musket while explaining to Johnny how it works. A British lieutenant sees him and hits him hard in the head with the side of his sword. Rab is knocked unconscious, but a sympathetic British medical officer helps Rab. The medical officer tells the boys that the British soldiers would rather be home,THey are frustrated and tired. He says that if everyone keeps their temper, the colonists’ problems can be solved without bloodshed.